{"title":"Milwaukee M18 Battery Rebuild Parts","description":"\u003cp\u003eBattery cases, PCB kits, and high-current lithium-ion cells for customers searching for M18 battery rebuild parts. DIY500AMP products are not OEM Milwaukee products; they are parts and cells for experienced builders repairing or building compatible packs.\u003c\/p\u003e","products":[{"product_id":"ampace-jp40-cells","title":"Ampace JP40 21700 4000mah 70A Battery - Tabless Cell","description":"\u003cdiv class=\"battery-cell-template\" style=\"--cell-accent:#dc2626; --cell-accent-soft:#fee2e2; --cell-accent-soft-border:#fca5a5; --cell-accent-muted:#b91c1c;\"\u003e\r\n  \u003cstyle\u003e\n    .battery-cell-template { font-family: Arial, Helvetica, sans-serif; color: #1f2937; line-height: 1.6; border: 1px solid #e5e7eb; border-top: 6px solid var(--cell-accent); border-radius: 18px; overflow: hidden; background: #fff; }\n    .battery-cell-template-inner { padding: 24px; }\n    .battery-cell-header { background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 72%); border: 1px solid var(--cell-accent-soft-border); border-radius: 16px; padding: 18px; margin-bottom: 18px; }\n    .battery-cell-header h2 { margin: 0 0 12px; line-height: 1.3; color: #111827; }\n    .battery-cell-badge, .battery-cell-mini-badge { display: inline-flex; align-items: center; border-radius: 999px; font-weight: 700; margin: 0 6px 6px 0; }\n    .battery-cell-badge { padding: 8px 12px; background: var(--cell-accent); color: #fff; font-size: 13px; }\n    .battery-cell-mini-badge { padding: 7px 10px; border: 1px solid var(--cell-accent-soft-border); background: #fff; color: #111827; font-size: 12px; }\n    .battery-cell-box { border: 1px solid var(--cell-accent-soft-border); background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 78%); border-radius: 16px; padding: 16px; margin: 18px 0; }\n    .battery-cell-box h3 { margin: 0 0 10px; color: #111827; }\n    .battery-cell-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }\n    .battery-cell-grid div { border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; background: #fff; }\n    .battery-cell-spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; border: 1px solid #e5e7eb; }\n    .battery-cell-spec-table td { border-bottom: 1px solid #e5e7eb; padding: 10px 12px; vertical-align: top; }\n    .battery-cell-spec-label { width: 38%; background: #f9fafb; color: #111827; }\n    .battery-cell-spec-value a { color: var(--cell-accent-muted); font-weight: 700; }\n    .battery-cell-warning { border: 1px solid #fecaca; background: #fff1f2; color: #7f1d1d; border-radius: 16px; padding: 16px; }\n    @media (max-width: 640px) { .battery-cell-template-inner { padding: 16px; } .battery-cell-grid { grid-template-columns: 1fr; } }\n  \u003c\/style\u003e\r\n  \u003cdiv class=\"battery-cell-template-inner\"\u003e\r\n    \u003cdiv class=\"battery-cell-header\"\u003e\r\n      \u003ch2\u003eAmpace JP40 Battery Cell\u003c\/h2\u003e\r\n      \u003cspan class=\"battery-cell-badge\"\u003eHigh Output Current Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003ePower Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e60A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eQuick Cell Guide\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cdiv class=\"battery-cell-grid\"\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003ePower level:\u003c\/strong\u003e\u003cbr\u003eHigh Output Current Cell\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eRuntime level:\u003c\/strong\u003e\u003cbr\u003e4000 mAh \/ 3.7V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003eDesign with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.\u003c\/div\u003e\r\n      \u003c\/div\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eTested by BatteryRealData\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eBatteryRealData link will be added when public tests are available.\u003c\/p\u003e\r\n      \u003cp\u003e\u003ca href=\"https:\/\/batteryrealdata.com\/cells\/\" target=\"_blank\" rel=\"noopener\"\u003eSee full BatteryRealData test results\u003c\/a\u003e\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\r\n    \u003ctable class=\"battery-cell-spec-table\"\u003e\r\n      \u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eAmpace\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eJP40 \/ 21700A\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eSize \/ Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e21700 cylindrical cell\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4000 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e3.7V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDischarge Cutoff Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e8A Max (2C)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e60A Max (80°C cutoff); 45A no-temp\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤4mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e70g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e21.31mm max diameter × 70.42mm max height, with tube\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≥2400mAh after 600 cycles at 30A discharge, rated charge, 25±2°C; ≥2400mAh after 400 cycles at 40A discharge with coolin\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-warning\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eUse only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.\u003c\/p\u003e\r\n      \u003cp\u003eManufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e\r\n","brand":"Ampace","offers":[{"title":"Default Title","offer_id":41237327347783,"sku":"AMP-JP40-21700-B1","price":4.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/ampace-21700-a4n21-4000mah-lithium-ion-battery-cell-upright-and-side-view.webp?v=1774985902"},{"product_id":"eve-40pl","title":"EVE 40PL 21700 4000mAh 70A Battery - Tabless Cell","description":"\u003cdiv class=\"battery-cell-template\" style=\"--cell-accent:#dc2626; --cell-accent-soft:#fee2e2; --cell-accent-soft-border:#fca5a5; --cell-accent-muted:#b91c1c;\"\u003e\r\n  \u003cstyle\u003e\n    .battery-cell-template { font-family: Arial, Helvetica, sans-serif; color: #1f2937; line-height: 1.6; border: 1px solid #e5e7eb; border-top: 6px solid var(--cell-accent); border-radius: 18px; overflow: hidden; background: #fff; }\n    .battery-cell-template-inner { padding: 24px; }\n    .battery-cell-header { background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 72%); border: 1px solid var(--cell-accent-soft-border); border-radius: 16px; padding: 18px; margin-bottom: 18px; }\n    .battery-cell-header h2 { margin: 0 0 12px; line-height: 1.3; color: #111827; }\n    .battery-cell-badge, .battery-cell-mini-badge { display: inline-flex; align-items: center; border-radius: 999px; font-weight: 700; margin: 0 6px 6px 0; }\n    .battery-cell-badge { padding: 8px 12px; background: var(--cell-accent); color: #fff; font-size: 13px; }\n    .battery-cell-mini-badge { padding: 7px 10px; border: 1px solid var(--cell-accent-soft-border); background: #fff; color: #111827; font-size: 12px; }\n    .battery-cell-box { border: 1px solid var(--cell-accent-soft-border); background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 78%); border-radius: 16px; padding: 16px; margin: 18px 0; }\n    .battery-cell-box h3 { margin: 0 0 10px; color: #111827; }\n    .battery-cell-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }\n    .battery-cell-grid div { border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; background: #fff; }\n    .battery-cell-spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; border: 1px solid #e5e7eb; }\n    .battery-cell-spec-table td { border-bottom: 1px solid #e5e7eb; padding: 10px 12px; vertical-align: top; }\n    .battery-cell-spec-label { width: 38%; background: #f9fafb; color: #111827; }\n    .battery-cell-spec-value a { color: var(--cell-accent-muted); font-weight: 700; }\n    .battery-cell-warning { border: 1px solid #fecaca; background: #fff1f2; color: #7f1d1d; border-radius: 16px; padding: 16px; }\n    @media (max-width: 640px) { .battery-cell-template-inner { padding: 16px; } .battery-cell-grid { grid-template-columns: 1fr; } }\n  \u003c\/style\u003e\r\n  \u003cdiv class=\"battery-cell-template-inner\"\u003e\r\n    \u003cdiv class=\"battery-cell-header\"\u003e\r\n      \u003ch2\u003eEVE 40PL Battery Cell\u003c\/h2\u003e\r\n      \u003cspan class=\"battery-cell-badge\"\u003eHigh Output Current Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003ePower Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e70A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eQuick Cell Guide\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cdiv class=\"battery-cell-grid\"\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003ePower level:\u003c\/strong\u003e\u003cbr\u003eHigh Output Current Cell\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eRuntime level:\u003c\/strong\u003e\u003cbr\u003e4000 mAh \/ 3.6V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003eDesign with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.\u003c\/div\u003e\r\n      \u003c\/div\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eTested by BatteryRealData\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eBatteryRealData link will be added when public tests are available.\u003c\/p\u003e\r\n      \u003cp\u003e\u003ca href=\"https:\/\/batteryrealdata.com\/cells\/\" target=\"_blank\" rel=\"noopener\"\u003eSee full BatteryRealData test results\u003c\/a\u003e\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\r\n    \u003ctable class=\"battery-cell-spec-table\"\u003e\r\n      \u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eEVE\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eINR21700\/40PL\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eSize \/ Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e21700 cylindrical cell\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4000 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDischarge Cutoff Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e8A Max (2C)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e70A Max (80°C cutoff)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤5mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e67g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eDiameter 21.15+\/-0.10 mm; height 70.15+\/-0.15 mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e400 cycles \u0026gt;=60% retention; discharge to 2.50V or 75C cutoff.\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-warning\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eUse only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.\u003c\/p\u003e\r\n      \u003cp\u003eManufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e\r\n","brand":"EVE","offers":[{"title":"Default Title","offer_id":41242441384007,"sku":"EVE-40PL-21700-B1","price":4.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/eve-40pl.jpg?v=1783475559"},{"product_id":"eve-25p-18650-2500mah-20a-battery","title":"EVE 25P 18650 Battery – 2500mAh, 20A","description":"\u003cdiv class=\"battery-cell-template\" style=\"--cell-accent:#dc2626; --cell-accent-soft:#fee2e2; --cell-accent-soft-border:#fca5a5; --cell-accent-muted:#b91c1c;\"\u003e\r\n  \u003cstyle\u003e\n    .battery-cell-template { font-family: Arial, Helvetica, sans-serif; color: #1f2937; line-height: 1.6; border: 1px solid #e5e7eb; border-top: 6px solid var(--cell-accent); border-radius: 18px; overflow: hidden; background: #fff; }\n    .battery-cell-template-inner { padding: 24px; }\n    .battery-cell-header { background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 72%); border: 1px solid var(--cell-accent-soft-border); border-radius: 16px; padding: 18px; margin-bottom: 18px; }\n    .battery-cell-header h2 { margin: 0 0 12px; line-height: 1.3; color: #111827; }\n    .battery-cell-badge, .battery-cell-mini-badge { display: inline-flex; align-items: center; border-radius: 999px; font-weight: 700; margin: 0 6px 6px 0; }\n    .battery-cell-badge { padding: 8px 12px; background: var(--cell-accent); color: #fff; font-size: 13px; }\n    .battery-cell-mini-badge { padding: 7px 10px; border: 1px solid var(--cell-accent-soft-border); background: #fff; color: #111827; font-size: 12px; }\n    .battery-cell-box { border: 1px solid var(--cell-accent-soft-border); background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 78%); border-radius: 16px; padding: 16px; margin: 18px 0; }\n    .battery-cell-box h3 { margin: 0 0 10px; color: #111827; }\n    .battery-cell-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }\n    .battery-cell-grid div { border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; background: #fff; }\n    .battery-cell-spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; border: 1px solid #e5e7eb; }\n    .battery-cell-spec-table td { border-bottom: 1px solid #e5e7eb; padding: 10px 12px; vertical-align: top; }\n    .battery-cell-spec-label { width: 38%; background: #f9fafb; color: #111827; }\n    .battery-cell-spec-value a { color: var(--cell-accent-muted); font-weight: 700; }\n    .battery-cell-warning { border: 1px solid #fecaca; background: #fff1f2; color: #7f1d1d; border-radius: 16px; padding: 16px; }\n    @media (max-width: 640px) { .battery-cell-template-inner { padding: 16px; } .battery-cell-grid { grid-template-columns: 1fr; } }\n  \u003c\/style\u003e\r\n  \u003cdiv class=\"battery-cell-template-inner\"\u003e\r\n    \u003cdiv class=\"battery-cell-header\"\u003e\r\n      \u003ch2\u003eEVE 25P Battery Cell\u003c\/h2\u003e\r\n      \u003cspan class=\"battery-cell-badge\"\u003eHigh Output Current Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003ePower Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e30A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eQuick Cell Guide\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cdiv class=\"battery-cell-grid\"\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003ePower level:\u003c\/strong\u003e\u003cbr\u003eHigh Output Current Cell\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eRuntime level:\u003c\/strong\u003e\u003cbr\u003e2500 mAh \/ 3.6V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003eDesign with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.\u003c\/div\u003e\r\n      \u003c\/div\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eTested by BatteryRealData\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eBatteryRealData link will be added when public tests are available.\u003c\/p\u003e\r\n      \u003cp\u003e\u003ca href=\"https:\/\/batteryrealdata.com\/cells\/\" target=\"_blank\" rel=\"noopener\"\u003eSee full BatteryRealData test results\u003c\/a\u003e\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\r\n    \u003ctable class=\"battery-cell-spec-table\"\u003e\r\n      \u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eEVE\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eINR18650\/25P\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eSize \/ Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e18650 cylindrical cell\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2500 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDischarge Cutoff Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e6A Max (2.4C)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e30A Max (80°C cutoff); 20A no-temp\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤18mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e48g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eHeight 65.00±0.15mm; Diameter 18.35±0.10mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e300 cycles, capacity ≥60%Ci; charge 4A to 4.2V CCCV 0.1A cutoff; discharge 20A to 2.50V or 75°C cutoff\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-warning\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eUse only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.\u003c\/p\u003e\r\n      \u003cp\u003eManufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e\r\n","brand":"EVE","offers":[{"title":"Default Title","offer_id":41272055365703,"sku":"EVE-25P-18650-B1","price":2.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/eve-25p-18650-2500mah-20a-battery.jpg?v=1783475557"},{"product_id":"eve-50pl-21700-battery","title":"EVE 50PL 21700 5000mAh 70A Tabless Lithium-Ion Battery Cell","description":"\u003cdiv class=\"battery-cell-template\" style=\"--cell-accent:#dc2626; --cell-accent-soft:#fee2e2; --cell-accent-soft-border:#fca5a5; --cell-accent-muted:#b91c1c;\"\u003e\r\n  \u003cstyle\u003e\n    .battery-cell-template { font-family: Arial, Helvetica, sans-serif; color: #1f2937; line-height: 1.6; border: 1px solid #e5e7eb; border-top: 6px solid var(--cell-accent); border-radius: 18px; overflow: hidden; background: #fff; }\n    .battery-cell-template-inner { padding: 24px; }\n    .battery-cell-header { background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 72%); border: 1px solid var(--cell-accent-soft-border); border-radius: 16px; padding: 18px; margin-bottom: 18px; }\n    .battery-cell-header h2 { margin: 0 0 12px; line-height: 1.3; color: #111827; }\n    .battery-cell-badge, .battery-cell-mini-badge { display: inline-flex; align-items: center; border-radius: 999px; font-weight: 700; margin: 0 6px 6px 0; }\n    .battery-cell-badge { padding: 8px 12px; background: var(--cell-accent); color: #fff; font-size: 13px; }\n    .battery-cell-mini-badge { padding: 7px 10px; border: 1px solid var(--cell-accent-soft-border); background: #fff; color: #111827; font-size: 12px; }\n    .battery-cell-box { border: 1px solid var(--cell-accent-soft-border); background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 78%); border-radius: 16px; padding: 16px; margin: 18px 0; }\n    .battery-cell-box h3 { margin: 0 0 10px; color: #111827; }\n    .battery-cell-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }\n    .battery-cell-grid div { border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; background: #fff; }\n    .battery-cell-spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; border: 1px solid #e5e7eb; }\n    .battery-cell-spec-table td { border-bottom: 1px solid #e5e7eb; padding: 10px 12px; vertical-align: top; }\n    .battery-cell-spec-label { width: 38%; background: #f9fafb; color: #111827; }\n    .battery-cell-spec-value a { color: var(--cell-accent-muted); font-weight: 700; }\n    .battery-cell-warning { border: 1px solid #fecaca; background: #fff1f2; color: #7f1d1d; border-radius: 16px; padding: 16px; }\n    @media (max-width: 640px) { .battery-cell-template-inner { padding: 16px; } .battery-cell-grid { grid-template-columns: 1fr; } }\n  \u003c\/style\u003e\r\n  \u003cdiv class=\"battery-cell-template-inner\"\u003e\r\n    \u003cdiv class=\"battery-cell-header\"\u003e\r\n      \u003ch2\u003eEVE 50PL Battery Cell\u003c\/h2\u003e\r\n      \u003cspan class=\"battery-cell-badge\"\u003eHigh Output Current Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003ePower Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e70A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eQuick Cell Guide\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cdiv class=\"battery-cell-grid\"\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003ePower level:\u003c\/strong\u003e\u003cbr\u003eHigh Output Current Cell\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eRuntime level:\u003c\/strong\u003e\u003cbr\u003e5000 mAh \/ 3.6V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003eDesign with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.\u003c\/div\u003e\r\n      \u003c\/div\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eTested by BatteryRealData\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eBatteryRealData link will be added when public tests are available.\u003c\/p\u003e\r\n      \u003cp\u003e\u003ca href=\"https:\/\/batteryrealdata.com\/cells\/\" target=\"_blank\" rel=\"noopener\"\u003eSee full BatteryRealData test results\u003c\/a\u003e\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\r\n    \u003ctable class=\"battery-cell-spec-table\"\u003e\r\n      \u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eEVE\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eINR21700\/50PL\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eSize \/ Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e21700 cylindrical cell\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e5000 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDischarge Cutoff Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e10A Max (2C)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e70A Max (80°C cutoff)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤5mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e68g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eDiameter 21.15±0.10mm, Height 70.15±0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eCapacity ≥60% after 400 cycles; charge 10A to 4.20V, 0.1A cutoff; discharge 40A to 2.50V or 75°C cutoff; rest 10 min aft\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-warning\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eUse only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.\u003c\/p\u003e\r\n      \u003cp\u003eManufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e\r\n","brand":"EVE","offers":[{"title":"Default Title","offer_id":41538049048647,"sku":"EVE-50PL-21700-B1","price":6.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/eve-inr21700-50pl-5000mah-lithium-ion-battery-cell-upright-and-side-view.jpg?v=1775573630"},{"product_id":"samsung-25r-18650-cell-2500mah-20a-battery","title":"Samsung 25R 18650 Cell – 2500mAh 20A Battery","description":"\u003cdiv class=\"battery-cell-template\" style=\"--cell-accent:#dc2626; --cell-accent-soft:#fee2e2; --cell-accent-soft-border:#fca5a5; --cell-accent-muted:#b91c1c;\"\u003e\r\n  \u003cstyle\u003e\n    .battery-cell-template { font-family: Arial, Helvetica, sans-serif; color: #1f2937; line-height: 1.6; border: 1px solid #e5e7eb; border-top: 6px solid var(--cell-accent); border-radius: 18px; overflow: hidden; background: #fff; }\n    .battery-cell-template-inner { padding: 24px; }\n    .battery-cell-header { background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 72%); border: 1px solid var(--cell-accent-soft-border); border-radius: 16px; padding: 18px; margin-bottom: 18px; }\n    .battery-cell-header h2 { margin: 0 0 12px; line-height: 1.3; color: #111827; }\n    .battery-cell-badge, .battery-cell-mini-badge { display: inline-flex; align-items: center; border-radius: 999px; font-weight: 700; margin: 0 6px 6px 0; }\n    .battery-cell-badge { padding: 8px 12px; background: var(--cell-accent); color: #fff; font-size: 13px; }\n    .battery-cell-mini-badge { padding: 7px 10px; border: 1px solid var(--cell-accent-soft-border); background: #fff; color: #111827; font-size: 12px; }\n    .battery-cell-box { border: 1px solid var(--cell-accent-soft-border); background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 78%); border-radius: 16px; padding: 16px; margin: 18px 0; }\n    .battery-cell-box h3 { margin: 0 0 10px; color: #111827; }\n    .battery-cell-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }\n    .battery-cell-grid div { border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; background: #fff; }\n    .battery-cell-spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; border: 1px solid #e5e7eb; }\n    .battery-cell-spec-table td { border-bottom: 1px solid #e5e7eb; padding: 10px 12px; vertical-align: top; }\n    .battery-cell-spec-label { width: 38%; background: #f9fafb; color: #111827; }\n    .battery-cell-spec-value a { color: var(--cell-accent-muted); font-weight: 700; }\n    .battery-cell-warning { border: 1px solid #fecaca; background: #fff1f2; color: #7f1d1d; border-radius: 16px; padding: 16px; }\n    @media (max-width: 640px) { .battery-cell-template-inner { padding: 16px; } .battery-cell-grid { grid-template-columns: 1fr; } }\n  \u003c\/style\u003e\r\n  \u003cdiv class=\"battery-cell-template-inner\"\u003e\r\n    \u003cdiv class=\"battery-cell-header\"\u003e\r\n      \u003ch2\u003eSamsung 25R Battery Cell\u003c\/h2\u003e\r\n      \u003cspan class=\"battery-cell-badge\"\u003eHigh Output Current Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003ePower Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e30A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eQuick Cell Guide\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cdiv class=\"battery-cell-grid\"\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003ePower level:\u003c\/strong\u003e\u003cbr\u003eHigh Output Current Cell\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eRuntime level:\u003c\/strong\u003e\u003cbr\u003e2500 mAh \/ 3.6V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003eDesign with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.\u003c\/div\u003e\r\n      \u003c\/div\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eTested by BatteryRealData\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eBatteryRealData link will be added when public tests are available.\u003c\/p\u003e\r\n      \u003cp\u003e\u003ca href=\"https:\/\/batteryrealdata.com\/cells\/\" target=\"_blank\" rel=\"noopener\"\u003eSee full BatteryRealData test results\u003c\/a\u003e\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\r\n    \u003ctable class=\"battery-cell-spec-table\"\u003e\r\n      \u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eSamsung\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eINR18650-25R (Version 5)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eSize \/ Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e18650 cylindrical cell\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eNCA\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2500 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDischarge Cutoff Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4A Max (1.6C)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e30A Max (80°C cutoff); 20A no-temp\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤18mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e45g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eDiameter max 18.40mm; height max 65.00mm, with tube\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eCapacity ≥1500mAh after 250 cycles, 60% of standard capacity, with 4A charge and 20A discharge to 2.5V at room temperatu\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-warning\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eUse only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.\u003c\/p\u003e\r\n      \u003cp\u003eManufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e\r\n","brand":"Samsung","offers":[{"title":"Default Title","offer_id":41856407568455,"sku":"SAM-25R-18650-B1","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/samsung-25r-18650-cell-2500mah-20a-battery.jpg?v=1783476817"},{"product_id":"milwaukee-m18-18v-6ah-battery-case-pcb-kit-no-cells-included","title":"Milwaukee M18 18V 6Ah Battery Case \u0026 PCB Kit (No Cells Included)","description":"\u003ch2 data-end=\"255\" data-start=\"168\"\u003e\u003cstrong data-end=\"255\" data-start=\"171\"\u003eDIY500AMP.COM – Milwaukee M18 18V 6Ah Battery Case \u0026amp; PCB Kit (No Cells Included)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"575\" data-start=\"257\"\u003e\u003cstrong data-end=\"279\" data-start=\"257\"\u003eRead Before Buying\u003c\/strong\u003e\u003cbr data-end=\"282\" data-start=\"279\"\u003eAt DIY500AMP.COM, we provide high-quality components for serious battery builders. This kit is made for users who already understand lithium-ion battery safety and have experience with spot welding and pack assembly. If you are new to battery building, this is not a beginner-friendly product.\u003c\/p\u003e\n\u003chr data-end=\"580\" data-start=\"577\"\u003e\n\u003ch3 data-end=\"602\" data-start=\"582\"\u003e\u003cstrong data-end=\"602\" data-start=\"586\"\u003eWhat You Get\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"798\" data-start=\"603\"\u003eA complete Milwaukee-style M18 18V 6Ah plastic housing with a matching PCB\/BMS protection board. You will need ten 18650 high-power lithium cells to complete your build. Cells are not included.\u003c\/p\u003e\n\u003cp data-end=\"862\" data-start=\"800\"\u003eThe included PCB is designed with important safety features:\u003c\/p\u003e\n\u003col data-end=\"1402\" data-start=\"864\"\u003e\n\u003cli data-end=\"968\" data-start=\"864\"\u003e\n\u003cp data-end=\"968\" data-start=\"867\"\u003eBattery level lock on first power-up until the pack goes through a full charge and discharge cycle.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1043\" data-start=\"969\"\u003e\n\u003cp data-end=\"1043\" data-start=\"972\"\u003eCharging indicator: red light means charging, green light means full.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1124\" data-start=\"1044\"\u003e\n\u003cp data-end=\"1124\" data-start=\"1047\"\u003eOvercharge protection that stops charging when voltage limits are exceeded.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1209\" data-start=\"1125\"\u003e\n\u003cp data-end=\"1209\" data-start=\"1128\"\u003eOvercharge recovery that resumes charging once voltage is back in a safe range.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1280\" data-start=\"1210\"\u003e\n\u003cp data-end=\"1280\" data-start=\"1213\"\u003eOver-discharge protection that cuts output if voltage is too low.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1402\" data-start=\"1281\"\u003e\n\u003cp data-end=\"1402\" data-start=\"1284\"\u003eOver-temperature protection during both charging and discharging, with automatic recovery when temperatures normalize.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr data-end=\"1407\" data-start=\"1404\"\u003e\n\u003ch3 data-end=\"1456\" data-start=\"1409\"\u003e\u003cstrong data-end=\"1456\" data-start=\"1413\"\u003eAssembly Tips from Nelvick at DIY500AMP\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2106\" data-start=\"1457\"\u003e\n\u003cli data-end=\"1556\" data-start=\"1457\"\u003e\n\u003cp data-end=\"1556\" data-start=\"1459\"\u003eUse only matched and balanced 18650 cells. All cells must have the same voltage before welding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1744\" data-start=\"1557\"\u003e\n\u003cp data-end=\"1744\" data-start=\"1559\"\u003eRecommended cells include EVE 25P, EVE 30P, Samsung 25R, Sony VTC5D, and the best option is \u003cstrong data-end=\"1641\" data-start=\"1626\"\u003eAmpace JP30\u003c\/strong\u003e. This kit is a perfect match for Ampace JP30 cells, giving you excellent performance and durability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1833\" data-start=\"1745\"\u003e\n\u003cp data-end=\"1833\" data-start=\"1747\"\u003eMake clean and correct welds. A reversed connection will instantly damage the board.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1894\" data-start=\"1834\"\u003e\n\u003cp data-end=\"1894\" data-start=\"1836\"\u003ePrevent the PCB from touching battery surfaces directly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1971\" data-start=\"1895\"\u003e\n\u003cp data-end=\"1971\" data-start=\"1897\"\u003eWork on a clean and dry surface while following anti-static precautions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2106\" data-start=\"1972\"\u003e\n\u003cp data-end=\"2106\" data-start=\"1974\"\u003ePCB and LED colors may vary depending on inventory. Colors may include blue, green, red, or white. Performance is always guaranteed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2111\" data-start=\"2108\"\u003e\n\u003ch3 data-end=\"2137\" data-start=\"2113\"\u003e\u003cstrong data-end=\"2137\" data-start=\"2117\"\u003eBefore You Start\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"2167\" data-start=\"2138\"\u003eIf you are using new cells:\u003c\/p\u003e\n\u003cul data-end=\"2279\" data-start=\"2168\"\u003e\n\u003cli data-end=\"2221\" data-start=\"2168\"\u003e\n\u003cp data-end=\"2221\" data-start=\"2170\"\u003eChoose only genuine high-drain 18650 power cells.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2279\" data-start=\"2222\"\u003e\n\u003cp data-end=\"2279\" data-start=\"2224\"\u003eBalance all cells to the same voltage before welding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2321\" data-start=\"2281\"\u003eIf you are repairing an existing pack:\u003c\/p\u003e\n\u003cul data-end=\"2386\" data-start=\"2322\"\u003e\n\u003cli data-end=\"2386\" data-start=\"2322\"\u003e\n\u003cp data-end=\"2386\" data-start=\"2324\"\u003eTest each cell and make sure voltages match before assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2482\" data-start=\"2388\"\u003eTip: If the pack does not output voltage after assembly, activate it with a dedicated charger.\u003c\/p\u003e\n\u003chr data-end=\"2487\" data-start=\"2484\"\u003e\n\u003ch3 data-end=\"2513\" data-start=\"2489\"\u003e\u003cstrong data-end=\"2513\" data-start=\"2493\"\u003ePackage Includes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2666\" data-start=\"2514\"\u003e\n\u003cli data-end=\"2547\" data-start=\"2514\"\u003e\n\u003cp data-end=\"2547\" data-start=\"2516\"\u003eOne M18-style plastic housing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2591\" data-start=\"2548\"\u003e\n\u003cp data-end=\"2591\" data-start=\"2550\"\u003eOne PCB with integrated BMS protections\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2638\" data-start=\"2592\"\u003e\n\u003cp data-end=\"2638\" data-start=\"2594\"\u003eHousing components shown in product photos\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2666\" data-start=\"2639\"\u003e\n\u003cp data-end=\"2666\" data-start=\"2641\"\u003eNo battery cells included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2671\" data-start=\"2668\"\u003e\n\u003cp data-end=\"2873\" data-start=\"2673\"\u003e\u003cstrong data-end=\"2693\" data-start=\"2673\"\u003eDIY500AMP Policy\u003c\/strong\u003e\u003cbr data-end=\"2696\" data-start=\"2693\"\u003ePurchasing this item means you accept that PCB and LED colors or design details may vary. These differences do not affect performance and are not a reason for return or dispute.\u003c\/p\u003e\n\u003chr data-end=\"2878\" data-start=\"2875\"\u003e\n\u003cp data-end=\"3097\" data-start=\"2880\"\u003e\u003cstrong data-end=\"2899\" data-start=\"2880\"\u003eSafety Reminder\u003c\/strong\u003e\u003cbr data-end=\"2902\" data-start=\"2899\"\u003eBattery building requires skill and proper tools. If you are unsure of your abilities, work with someone experienced. Improper assembly can cause damage to the PCB, cells, or create safety risks.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"title--wrap--NWOaiSp description--title--NMh4UiD\"\u003e\n\u003cdiv class=\"title--text--Otu0bLr\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"extend--wrap--yXwoDbO\"\u003e\n\u003cdiv class=\"extend--content--VuIQZia\"\u003e\n\u003cdiv\u003e\n\u003cdiv data-pl=\"product-description\" class=\"description--product-description--Mjtql28\" data-spm=\"1000023\" id=\"product-description\"\u003e\n\u003cdiv class=\"description--origin-part--rWy05pE\"\u003e\n\u003cp data-spm-anchor-id=\"a2g0o.detail.1000023.i0.37c0N40NN40NJj\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S4626d7310e164e529aa7d7c7c3e4b131V.jpg\"\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S7cf9ae5497a14a11892133738240277cn.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se6b3f6b8734345ad90ae2f933cfc0d73h.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S94681fc0eb084077a27666d04e58cf96d.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\"\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S491e75fcd2a04f70a22eb3cdd78559dfS.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S2b9ceffdaee44593a5d0f2234b48e266R.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt can fill \u003c\/span\u003e\u003cspan\u003e10 pieces of 18650\u003c\/span\u003e\u003cspan\u003e power Li-ion batteries, But this is plastic shell, there is no battery inside.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv align=\"start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\u003cspan\u003ePlease be kindly noted:\u003c\/span\u003e\u003c\/div\u003e\n\u003cp align=\"left\"\u003e\u003cspan\u003e1. PCB Color: Blue, or white, or Green, or Red, etc. any color, PCB color and version number are different according to the actual latest inventory. \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv align=\"start\"\u003e\u003cspan\u003e2. PCB design may change due to changes with the supply chain and processing technology. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\u003cspan\u003e3. LED Color: red, or green, or blue.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\u003cspan\u003eIf you have any objection to the following items, please do not order ! \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\n\u003cspan\u003e1. \u003c\/span\u003e\u003cspan\u003ePCB color and Led color may be any color according to our stock, \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\n\u003cspan\u003e2. PCB design may change \u003c\/span\u003e\u003cspan\u003ewith the same function and performance guaranteed\u003c\/span\u003e\u003cspan\u003e .\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv align=\"start\"\u003e\n\u003cspan\u003eOnce you place an order, you agree to the above two terms by default, and you are not allowed to submit disputes for the reasons of \"different colors, design changes, wrong version of goods\" and so on.\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003cbr\u003ePreparation before assembly:\u003cbr\u003e(1). If a new core is used, please note:\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e        a. 18650 \u003c\/span\u003e\u003cspan\u003epower \u003c\/span\u003e\u003cspan\u003elithium battery core must be selected,\u003cbr\u003e        b. A group of 5\/10 cores must be equipped with resistance and capacitance to make their voltage the same.\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e(2). If the old battery is repaired, please test the voltage at both ends of each cell. If the voltage is different, please charge each cell to the same voltage value.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eVery important:\u003cbr\u003eEnsure that the voltage of each cell is the same before welding PCB.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003ePackaging includes:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eAs shown in the following figure: (\u003c\/span\u003e\u003cspan\u003eNo Battery !!! No cell !!!\u003c\/span\u003e\u003cspan\u003e)\u003c\/span\u003e\u003cbr\u003e\u003cimg data-spm-anchor-id=\"a2g0o.detail.1000023.i1.37c0N40NN40NJj\" src=\"https:\/\/ae01.alicdn.com\/kf\/S9788521ac4dc42c0a35dbaf443a7bd3cW.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DIY500AMP.COM","offers":[{"title":"18650","offer_id":42916792565831,"sku":"DIY-42916792565831","price":16.95,"currency_code":"USD","in_stock":true},{"title":"21700","offer_id":42916792598599,"sku":"DIY-42916792598599","price":16.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/M18-Kit-1.jpg?v=1754612894"},{"product_id":"ampace-jp50-21700-5000mah-60a-battery-premium-high-current-cell","title":"Ampace JP50 21700 5000mAh 60A Battery – Premium High-Current Cell","description":"\u003cdiv class=\"battery-cell-template\" style=\"--cell-accent:#dc2626; --cell-accent-soft:#fee2e2; --cell-accent-soft-border:#fca5a5; --cell-accent-muted:#b91c1c;\"\u003e\r\n  \u003cstyle\u003e\n    .battery-cell-template { font-family: Arial, Helvetica, sans-serif; color: #1f2937; line-height: 1.6; border: 1px solid #e5e7eb; border-top: 6px solid var(--cell-accent); border-radius: 18px; overflow: hidden; background: #fff; }\n    .battery-cell-template-inner { padding: 24px; }\n    .battery-cell-header { background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 72%); border: 1px solid var(--cell-accent-soft-border); border-radius: 16px; padding: 18px; margin-bottom: 18px; }\n    .battery-cell-header h2 { margin: 0 0 12px; line-height: 1.3; color: #111827; }\n    .battery-cell-badge, .battery-cell-mini-badge { display: inline-flex; align-items: center; border-radius: 999px; font-weight: 700; margin: 0 6px 6px 0; }\n    .battery-cell-badge { padding: 8px 12px; background: var(--cell-accent); color: #fff; font-size: 13px; }\n    .battery-cell-mini-badge { padding: 7px 10px; border: 1px solid var(--cell-accent-soft-border); background: #fff; color: #111827; font-size: 12px; }\n    .battery-cell-box { border: 1px solid var(--cell-accent-soft-border); background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 78%); border-radius: 16px; padding: 16px; margin: 18px 0; }\n    .battery-cell-box h3 { margin: 0 0 10px; color: #111827; }\n    .battery-cell-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }\n    .battery-cell-grid div { border: 1px solid #e5e7eb; border-radius: 12px; padding: 12px; background: #fff; }\n    .battery-cell-spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 18px; border: 1px solid #e5e7eb; }\n    .battery-cell-spec-table td { border-bottom: 1px solid #e5e7eb; padding: 10px 12px; vertical-align: top; }\n    .battery-cell-spec-label { width: 38%; background: #f9fafb; color: #111827; }\n    .battery-cell-spec-value a { color: var(--cell-accent-muted); font-weight: 700; }\n    .battery-cell-warning { border: 1px solid #fecaca; background: #fff1f2; color: #7f1d1d; border-radius: 16px; padding: 16px; }\n    @media (max-width: 640px) { .battery-cell-template-inner { padding: 16px; } .battery-cell-grid { grid-template-columns: 1fr; } }\n  \u003c\/style\u003e\r\n  \u003cdiv class=\"battery-cell-template-inner\"\u003e\r\n    \u003cdiv class=\"battery-cell-header\"\u003e\r\n      \u003ch2\u003eAmpace JP50P1 Battery Cell\u003c\/h2\u003e\r\n      \u003cspan class=\"battery-cell-badge\"\u003eHigh Output Current Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003ePower Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e60A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eQuick Cell Guide\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cdiv class=\"battery-cell-grid\"\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003ePower level:\u003c\/strong\u003e\u003cbr\u003eHigh Output Current Cell\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eRuntime level:\u003c\/strong\u003e\u003cbr\u003e5000 mAh \/ 3.58V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eBuilt for high-current packs where voltage sag, heat, and current sharing matter.\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003cbr\u003eDesign with current headroom. Do not build at the edge of the datasheet rating without checking heat, BMS limits, and current sharing.\u003c\/div\u003e\r\n      \u003c\/div\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-box\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eTested by BatteryRealData\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eBatteryRealData link will be added when public tests are available.\u003c\/p\u003e\r\n      \u003cp\u003e\u003ca href=\"https:\/\/batteryrealdata.com\/cells\/\" target=\"_blank\" rel=\"noopener\"\u003eSee full BatteryRealData test results\u003c\/a\u003e\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n\r\n    \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\r\n    \u003ctable class=\"battery-cell-spec-table\"\u003e\r\n      \u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eAmpace\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eJP50P1\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eSize \/ Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e21700 cylindrical cell\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLi-ion\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e5000 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e3.58V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDischarge Cutoff Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e15A Max (3C)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eMaximum Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e60A Max (80°C cutoff); 40A no-temp\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤4mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e72g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eDiameter max 21.35mm, Height max 70.45mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e25°C\/15A charge\/30A discharge: capacity retention ≥60% after 600 cycles; 25°C\/15A charge\/40A discharge: capacity retenti\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n\r\n    \u003cdiv class=\"battery-cell-warning\"\u003e\r\n      \u003ch3\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003c\/h3\u003e\r\n      \u003cp\u003eUse only in properly designed battery packs with correct BMS protection, insulation, fusing, current sharing, and thermal management. These are unprotected lithium-ion cells for experienced builders.\u003c\/p\u003e\r\n      \u003cp\u003eManufacturer maximum ratings are limits, not automatic DIY500AMP recommendations for long-term pack design.\u003c\/p\u003e\r\n    \u003c\/div\u003e\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e\r\n","brand":"Ampace","offers":[{"title":"Default Title","offer_id":42327872405575,"sku":"AMP-JP50-21700-B1","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/ampace-inr21700-jp50p1-5000mah-lithium-ion-battery-cell-upright-and-side-view.jpg?v=1775573479"},{"product_id":"milwaukee-18v-li-ion-battery-case-15ah-12ah","title":"Milwaukee 18V Li-ion Battery Case 15ah (12ah)","description":"\u003cp\u003e\u003cstrong\u003e15 x 21700 Plastic Case with PCB Circuit Board for Milwaukee 18V Li-ion Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis listing is for a \u003cstrong\u003ebrand new replacement battery case and PCB assembly\u003c\/strong\u003e designed for building or repairing a Milwaukee 18V style battery pack using \u003cstrong\u003e15 x 21700 lithium-ion cells\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e this is \u003cstrong\u003enot an original Milwaukee product\u003c\/strong\u003e, and \u003cstrong\u003eno battery cells are included\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e this shell is designed for \u003cstrong\u003e21700 lithium-ion cells only\u003c\/strong\u003e. It is \u003cstrong\u003enot compatible with 18650 cells\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat this product is for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis product is a \u003cstrong\u003ebattery case component only\u003c\/strong\u003e, intended for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRepairing damaged battery housings\u003c\/li\u003e\n\u003cli\u003eRebuilding compatible battery packs\u003c\/li\u003e\n\u003cli\u003eCustom battery assembly projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt includes a \u003cstrong\u003ePCB board\u003c\/strong\u003e and supports \u003cstrong\u003eLED battery status indication\u003c\/strong\u003e, but it does \u003cstrong\u003enot include battery cells\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003e15 pieces of 21700 lithium-ion cells\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with Milwaukee 18V style battery pack builds\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003ePCB circuit board\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes \u003cstrong\u003eLED battery status indicator\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdeal for battery pack repair or custom assembly\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNo battery cells included\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePreparation Before Assembly\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIf using new cells:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse only \u003cstrong\u003e21700 high-power lithium-ion cells\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAll 15 cells should be of the \u003cstrong\u003esame model, same specifications, and similar internal resistance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBefore assembly, make sure the voltage of all cells is matched\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIf repairing an old battery pack:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCheck the voltage of each individual cell first\u003c\/li\u003e\n\u003cli\u003eIf the voltages are different, charge the cells individually until they reach the \u003cstrong\u003esame voltage level\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVery Important:\u003c\/strong\u003e before welding the PCB, make sure \u003cstrong\u003eevery cell has the same voltage\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eAssembly Guidelines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse only \u003cstrong\u003e21700 power lithium-ion cells\u003c\/strong\u003e with \u003cstrong\u003elow internal resistance\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUse cells of the \u003cstrong\u003esame brand, same model, and same parameters\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDo \u003cstrong\u003enot\u003c\/strong\u003e use general-purpose or energy storage lithium cells for this build\u003c\/li\u003e\n\u003cli\u003ePre-test each cell before assembly\u003c\/li\u003e\n\u003cli\u003eBring all cells to the same voltage before connecting and welding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePlease Read Before Ordering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePCB board color may vary depending on stock\u003c\/li\u003e\n\u003cli\u003ePCB layout or design may vary slightly while maintaining the same function and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBy purchasing this item, you acknowledge and accept that minor differences in PCB color or board layout may occur.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 15S style plastic battery case for \u003cstrong\u003e15 x 21700 cells\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e1 x PCB circuit board\u003c\/li\u003e\n\u003cli\u003eLED battery status indicator components as shown\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePackage contents are exactly as shown in the product photos.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eKind Reminder\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis product is a \u003cstrong\u003ecomponent only\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNo battery cells are included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eThis item is intended for users who understand lithium battery assembly and safety\u003c\/li\u003e\n\u003cli\u003eIf you are not familiar with battery pack building, this product is not recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Notice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis product is intended for experienced users only. Lithium-ion battery assembly requires proper knowledge, correct cell matching, and safe welding practices. Improper assembly may result in damage, failure, or safety hazards.\u003c\/p\u003e\n\u003cp\u003e``` I can also make this more like a polished Shopify-style listing with a better sales tone and cleaner section titles.\u003c\/p\u003e","brand":"DIY500AMP.COM","offers":[{"title":"Default Title","offer_id":42656199409735,"sku":"DIY-42656199409735","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/Milwalkee-12ah-15-cells.jpg?v=1774920884"}],"url":"https:\/\/diy500amp.com\/collections\/milwaukee-m18-battery-rebuild-parts.oembed","provider":"DIY500AMP.COM","version":"1.0","type":"link"}