{"title":"RS60 21700 Battery Alternatives","description":"\u003cp\u003eCustomers searching for RS60 or Reliance RS60 can compare available high-output 21700 alternatives here. These are not RS60-branded cells; they are DIY500AMP-stocked options for similar high-current or high-capacity build goals.\u003c\/p\u003e","products":[{"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":"reliance-21700-rs50-5000mah-70a-lithium-ion-battery-tabless-cell-high-performance","title":"Reliance 21700 RS50 5000mAh 70A CCC Lithium-Ion Battery Tabless Cell - High Performance","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\u003eReliance RS50 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\"\u003eReliance\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-RS50\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\"\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\"\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≤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\"\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\"\u003eMax Diameter 21.35mm, Max Height 70.30mm\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\"\u003e200 cycles ≥80% at 0°C +8A\/-10A; 50 cycles ≥80% at -10°C +3A\/-10A; 400 cycles ≥60% at RT +8A\/-40A; 400 cycles ≥60% at RT\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":"Reliance","offers":[{"title":"Default Title","offer_id":41856427098183,"sku":"REL-RS50-21700-B1","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/reliance-rs50-21700-5000mah-70a-tabless-lithium-ion-battery-cell-front-side-view.jpg?v=1775573502"},{"product_id":"tenpower-50xg-21700-5000-mah-90a-battery-tabless-cell","title":"TENPOWER 50XG 21700 5000 mAh 90A 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\u003eTenpower 50XG 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\"\u003e90A 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\"\u003eTenpower\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\"\u003eINR21700-50XG\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\"\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\"\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\"\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\"\u003e90A Max (75°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\"\u003e71g\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 ≤70.50mm; Diameter ≤21.50mm\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% of initial capacity after 500 cycles; charge 6A to 4.2V CCCV 100mA cutoff, discharge 40A to 2.5V or 75°C c\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":"TENPOWER","offers":[{"title":"Default Title","offer_id":42006568108103,"sku":"TP-50XG-21700-5AH-90A","price":6.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/reliance-rs50-21700-5000mah-70a-tabless-lithium-ion-battery-cell-upright-and-side-view.jpg?v=1774981275"},{"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":"linkdata-55p-21700-cell-5500mah-50a-lithium-ion-battery","title":"LinkData 55P 21700 Cell - 5500mAh 50A Lithium-Ion 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\u003eLinkdata 55P 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\"\u003eHybrid Power + Capacity Cell\u003c\/span\u003e\r\n      \u003cspan class=\"battery-cell-mini-badge\"\u003e50A max current basis\u003c\/span\u003e\r\n      \u003cp\u003eHigh output with strong runtime. Best when the pack needs both current delivery and energy density.\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\u003e5500 mAh \/ 3.6V\u003c\/div\u003e\r\n        \u003cdiv\u003e\n\u003cstrong\u003eBest use:\u003c\/strong\u003e\u003cbr\u003eHigh output with strong runtime. Best when the pack needs both current delivery and energy density.\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\"\u003eLinkdata\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\"\u003eINR21700S-55P\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\"\u003e5500 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 (1.5C)\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\"\u003e50A 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≤4.5mΩ\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\"\u003e68.5g\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 21.35±0.15mm; height 70.7±0.2mm, with plastic film\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≥1000 cycles at 1C charge \/ 1C discharge to 80% initial capacity; ≥600 cycles at 8A charge \/ 30A discharge to 60% initia\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":"Linkdata","offers":[{"title":"Default Title","offer_id":42924396380231,"sku":"LD-55P-21700-5500-50A","price":8.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/linkdata-55p-21700-5500mah-50a-lithium-ion-battery-cell-1.jpg?v=1783474560"}],"url":"https:\/\/diy500amp.com\/collections\/rs60-21700-battery-alternatives.oembed","provider":"DIY500AMP.COM","version":"1.0","type":"link"}