{"product_id":"linkdata-55p-21700-cell-5500mah-50a-lithium-ion-battery","title":"LinkData 55P 21700 Cell - 5500mAh 50A Lithium-Ion Battery","description":"\u003cstyle\u003e\n    .battery-cell-template {\n      font-family: Arial, Helvetica, sans-serif;\n      color: #1f2937;\n      line-height: 1.6;\n      border: 1px solid #e5e7eb;\n      border-top: 6px solid var(--cell-accent);\n      border-radius: 18px;\n      overflow: hidden;\n      background: #ffffff;\n    }\n\n    .battery-cell-template-inner {\n      padding: 24px;\n    }\n\n    .battery-cell-template h2,\n    .battery-cell-template h3,\n    .battery-cell-template p,\n    .battery-cell-template ul,\n    .battery-cell-template table {\n      margin-top: 0;\n    }\n\n    .battery-cell-header {\n      background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 70%);\n      border: 1px solid var(--cell-accent-soft-border);\n      border-radius: 16px;\n      padding: 18px 18px 14px;\n      margin-bottom: 18px;\n    }\n\n    .battery-cell-header h2 {\n      margin-bottom: 10px;\n      line-height: 1.3;\n      color: #111827;\n    }\n\n    .battery-cell-badge {\n      display: inline-flex;\n      align-items: center;\n      gap: 8px;\n      padding: 8px 12px;\n      border-radius: 999px;\n      background: var(--cell-accent);\n      color: #ffffff;\n      font-size: 13px;\n      font-weight: 700;\n    }\n\n    .battery-cell-section-heading {\n      color: var(--cell-accent-muted);\n      border-left: 5px solid var(--cell-accent);\n      padding-left: 12px;\n      margin: 22px 0 14px;\n    }\n\n    .battery-cell-table-wrap {\n      width: 100%;\n      overflow-x: auto;\n      margin-bottom: 18px;\n      border-radius: 14px;\n    }\n\n    .battery-cell-spec-table {\n      width: 100%;\n      min-width: 620px;\n      border-collapse: collapse;\n      border: 1px solid #e5e7eb;\n      margin-bottom: 0;\n    }\n\n    .battery-cell-spec-table td {\n      border: 1px solid #e5e7eb;\n      padding: 11px 12px;\n      vertical-align: top;\n    }\n\n    .battery-cell-spec-label {\n      width: 34%;\n      background: var(--cell-accent-soft);\n    }\n\n    .battery-cell-spec-value a {\n      color: var(--cell-accent-muted);\n      font-weight: 700;\n    }\n\n    .battery-cell-highlight {\n      border: 1px solid var(--cell-accent-soft-border);\n      background: linear-gradient(135deg, var(--cell-accent-soft), #ffffff 85%);\n      border-radius: 14px;\n      padding: 14px 16px;\n      margin: 18px 0;\n    }\n\n    .battery-cell-template ul {\n      padding-left: 1.35rem;\n      margin-bottom: 16px;\n    }\n\n    .battery-cell-template li {\n      margin-bottom: 7px;\n    }\n\n    @media screen and (max-width: 640px) {\n      .battery-cell-template-inner {\n        padding: 16px;\n      }\n\n      .battery-cell-header {\n        padding: 16px;\n      }\n\n      .battery-cell-header h2 {\n        font-size: 20px;\n      }\n\n      .battery-cell-badge {\n        font-size: 12px;\n        line-height: 1.4;\n        border-radius: 14px;\n      }\n    }\n  \u003c\/style\u003e\n\u003cdiv style=\"--cell-accent: #ea580c; --cell-accent-soft: #ffedd5; --cell-accent-soft-border: #fdba74; --cell-accent-muted: #c2410c;\" class=\"battery-cell-template\"\u003e\n\u003cdiv class=\"battery-cell-template-inner\"\u003e\n\u003cdiv class=\"battery-cell-header\"\u003e\n\u003ch2\u003e\u003cstrong\u003eLinkData 55P 21700 Cell - 5500mAh 40A \/ 50A Lithium-Ion Battery\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"battery-cell-badge\"\u003eDatasheet max: 40A continuous \/ 50A with 80°C temperature cutoff\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003eLinkData INR21700S-55P 21700 5500mAh\u003c\/strong\u003e is a \u003cstrong\u003ehigh-capacity, high-discharge lithium-ion cell\u003c\/strong\u003e designed for experienced battery pack builders who need strong runtime and high current capability in a 21700 format.\u003c\/p\u003e\n\u003cp\u003eAccording to the LinkData INR21700S-55P specification, this cell has \u003cstrong\u003e5500mAh typical capacity\u003c\/strong\u003e, \u003cstrong\u003e5400mAh rated capacity\u003c\/strong\u003e, \u003cstrong\u003e3.6V nominal voltage\u003c\/strong\u003e, and a manufacturer discharge rating of \u003cstrong\u003e40A continuous without temperature cutoff\u003c\/strong\u003e or \u003cstrong\u003e50A continuous with 80°C temperature cutoff\u003c\/strong\u003e. It also lists an \u003cstrong\u003e88A pulse discharge rating for 10 seconds\u003c\/strong\u003e at 25±2°C and 50% SOC.\u003c\/p\u003e\n\u003cp\u003eThis is not a general-purpose loose consumer battery. It is best used in \u003cstrong\u003eproperly engineered battery packs or test fixtures\u003c\/strong\u003e with correct current sharing, over-current protection, over-discharge protection, temperature monitoring, and safe mechanical support.\u003c\/p\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5500mAh typical capacity\u003c\/strong\u003e with 5400mAh rated capacity listed in the specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e21700 cylindrical lithium-ion cell\u003c\/strong\u003e for advanced battery pack building.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer rating:\u003c\/strong\u003e 40A continuous without temperature cutoff, or 50A with 80°C temperature cutoff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e88A pulse discharge rating for 10 seconds\u003c\/strong\u003e at 25±2°C and 50% SOC as listed by the manufacturer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow AC internal resistance:\u003c\/strong\u003e ≤4.5mΩ at 1kHz and 30% SOC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong capacity and power balance\u003c\/strong\u003e for demanding 21700 battery pack applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"battery-cell-table-wrap\"\u003e\n\u003ctable class=\"battery-cell-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eStore SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLD-55P-21700-5500-50A\u003c\/td\u003e\n\u003c\/tr\u003e\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\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\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eRechargeable lithium-ion cell\u003c\/td\u003e\n\u003c\/tr\u003e\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\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eTypical Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e5500mAh\u003c\/td\u003e\n\u003c\/tr\u003e\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\"\u003e5400mAh minimum by standard charge and discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eTypical Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e19.8Wh typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRated Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≥19.4Wh by standard discharge to 2.50V at 25±2°C\u003c\/td\u003e\n\u003c\/tr\u003e\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\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\"\u003e4.20V\u003c\/td\u003e\n\u003c\/tr\u003e\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\"\u003e2.50V datasheet cutoff. LinkData recommends system discharge voltage controlled above 2.50V, for example 3.00V.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eStandard Charge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eCCCV, 1C \/ 5500mA to 4.20V, 0.02C \/ 110mA cut-off at 25±2°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eStandard Charge Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤1.5 hours for reference\u003c\/td\u003e\n\u003c\/tr\u003e\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 continuous charge listed in nominal specification. Charger design section states charge current should not exceed 10A per cell.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eStandard Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e0.2C \/ 1100mA discharge to 2.50V at 25±2°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eManufacturer Max Continuous Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e40A without temperature cutoff \/ 50A with 80°C temperature cutoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003ePulse Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e88A for 10 seconds at 25±2°C and 50% SOC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRecommended Continuous Use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eUse 40A or less per cell unless the pack has verified cooling, current sharing, and temperature cutoff. Do not design around 50A continuous without pack-level validation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDC Internal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤13mΩ at 50% SOC, 1C discharge, 10 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eAC Internal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e≤4.5mΩ at 1kHz and 30% SOC\u003c\/td\u003e\n\u003c\/tr\u003e\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\"\u003e68.5±1.5g\u003c\/td\u003e\n\u003c\/tr\u003e\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\"\u003e21.35±0.15mm diameter x 70.7±0.2mm shoulder height with plastic film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eCell Wrap Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eGrey and purple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eOperating Surface Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eCharge: 0°C to 60°C, recommended recharge release below 45°C \/ Discharge: -30°C to 80°C, must re-discharge release below 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eStorage Condition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eShipping state 20-30% SOC. 1 year: -20°C to 23°C; 3 months: -20°C to 45°C; 1 month: -20°C to 60°C; capacity recovery ≥90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eLong-Term Storage Guidance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eStore in a low-humidity environment below 70% RH, free of corrosive gases. For long duration storage, 0°C to 20°C is recommended.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eRate Discharge Performance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e0.5C capacity ≥98%, 1C capacity ≥97%, 6C capacity ≥95% relative to standard discharge capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eTemperature Discharge Performance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e55±2°C at 1C: capacity ≥97%. -20±2°C at 1C: capacity ≥80%. -30±2°C at 1C: capacity ≥70%.\u003c\/td\u003e\n\u003c\/tr\u003e\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% initial capacity under manufacturer test conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003ePower Performance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003e250W discharge for 10 seconds at 50% SOC, ending voltage \u0026gt;2.50V and cell surface temperature ≤70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eBattery Pack Protection Guidance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eBattery packs should include overcharge protection, over-discharge protection, over-current protection, temperature monitoring, and protection against reverse polarity and short circuit.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"battery-cell-spec-label\"\u003e\u003cstrong\u003eDatasheet Status\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"battery-cell-spec-value\"\u003eLinkData INR21700S-55P Product Specification, Doc. No. PS-C043-001, Revision A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eRecommended Use\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe LinkData 55P is recommended for experienced battery builders, pack designers, and testers working with high-capacity, high-discharge 21700 lithium-ion cells. It is a strong option for properly engineered battery packs where runtime and current delivery both matter.\u003c\/p\u003e\n\u003cp\u003eFor practical design, treat \u003cstrong\u003e40A per cell\u003c\/strong\u003e as the cleaner datasheet continuous reference point. The \u003cstrong\u003e50A rating is tied to an 80°C temperature cutoff\u003c\/strong\u003e and should only be used when the pack design, airflow, heat path, BMS limits, and application duty cycle have been tested and validated.\u003c\/p\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eReal-World Performance Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer data lists rate discharge capacity of at least 98% at 0.5C, at least 97% at 1C, and at least 95% at 6C when compared to standard discharge capacity. The datasheet also lists a 250W 10-second power test at 50% SOC with ending voltage above 2.50V and cell surface temperature at or below 70°C.\u003c\/p\u003e\n\u003cp\u003eReal-world performance depends on temperature, cooling, current draw, pack design, nickel\/copper busbars, wire gauge, BMS settings, cell matching, enclosure airflow, and application duty cycle.\u003c\/p\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-performance 21700 battery pack building\u003c\/li\u003e\n\u003cli\u003eE-bike and scooter packs with proper BMS and temperature monitoring\u003c\/li\u003e\n\u003cli\u003ePower tools, garden tools, robotics, and other high-drain equipment\u003c\/li\u003e\n\u003cli\u003eRC, UAV, and mobile power systems where high output and runtime matter\u003c\/li\u003e\n\u003cli\u003eCell comparison testing and custom battery pack development\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eWhat Is Included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x LinkData INR21700S-55P 21700 lithium-ion cell\u003c\/li\u003e\n\u003cli\u003eNo charger, BMS, holder, nickel strip, busbar, or wiring included unless stated separately\u003c\/li\u003e\n\u003cli\u003eBulk packaging may vary depending on quantity and availability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer maximum ratings are limits, not automatic recommendations for long-term continuous operation.\u003c\/li\u003e\n\u003cli\u003eHigh-current use requires proper pack design, cell matching, current sharing, thermal design, and protection circuitry.\u003c\/li\u003e\n\u003cli\u003eDo not solder directly onto the cell terminals. Cells should only be assembled using proper spot welding methods.\u003c\/li\u003e\n\u003cli\u003eDo not mix cells from different batches, charge dates, or capacity ranks in series packs.\u003c\/li\u003e\n\u003cli\u003eFor series packs, keep cell voltage variation within 20mV before assembly.\u003c\/li\u003e\n\u003cli\u003eDo not use damaged, dented, leaking, overheated, dropped, shorted, deformed, or rewrapped cells.\u003c\/li\u003e\n\u003cli\u003eDo not charge below 0°C or above 60°C.\u003c\/li\u003e\n\u003cli\u003eDo not discharge below the recommended system cutoff. LinkData recommends controlling system discharge above 2.50V, for example 3.00V.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"battery-cell-highlight\"\u003e\n\u003cstrong\u003eDIY500AMP.COM Note: Build with current headroom.\u003c\/strong\u003e\u003cbr\u003eDo not build a pack at the edge of the datasheet rating unless the pack has been tested at the full current, full duty cycle, and real operating temperature.\u003cbr\u003e\u003cbr\u003eFor safer pack design, use the 40A continuous rating as the main design reference and reserve the 50A rating for validated systems with temperature cutoff and thermal monitoring.\u003c\/div\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the LinkData 55P rated for 50A continuous discharge?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe datasheet lists 40A continuous discharge without temperature cutoff and 50A continuous discharge with 80°C temperature cutoff. DIY500AMP.COM does not recommend assuming 50A per cell is suitable for every pack. Use proper testing, cooling, current sharing, and BMS temperature protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this cell be used for e-bikes, scooters, drones, RC, or power tools?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, when used in a properly engineered battery pack with correct parallel count, protection circuitry, thermal design, and safe current limits. It is not intended to be used as a loose standalone battery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes DIY500AMP.COM recommend using the maximum rating continuously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Maximum ratings should be treated as limits. For long-term pack health, build with current headroom and verify temperature rise under the actual load profile.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat charger should be used with this cell?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse a lithium-ion charger or pack charging system designed for 4.20V maximum cell voltage with proper CC\/CV charging, full-charge detection, and protection circuitry. Do not trickle charge lithium-ion cells.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I solder directly onto this cell?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The datasheet states not to solder directly onto the cell. Battery pack assembly should use proper spot welding methods and correct pack-building practices.\u003c\/p\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eSafety Warning for Lithium-Ion Battery Usage\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eCustomers should have a clear understanding of lithium-ion battery handling and safety before making a purchase. Lithium-ion batteries are highly sensitive and may pose fire, burn, or explosion risks if improperly handled. Always charge batteries on fire-resistant surfaces, and never leave them charging unattended.\u003c\/p\u003e\n\u003cp\u003eBy purchasing, you assume full responsibility for any injury, damage, or loss arising from the incorrect use or handling of lithium-ion batteries or chargers. Compatibility with specific devices is not guaranteed. Only charge using a smart charger designed specifically for this battery type, and do not mix old or used batteries with new ones.\u003c\/p\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eImportant Usage Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNot for use in e-cigarettes, vape devices, or similar devices.\u003c\/li\u003e\n\u003cli\u003eRisk of fire and explosion: misuse can cause batteries to ignite, explode, vent, or release harmful gases.\u003c\/li\u003e\n\u003cli\u003eAlways use in a protected pack with appropriate circuitry and correct current limits.\u003c\/li\u003e\n\u003cli\u003eStore batteries in protective cases, away from metal items, to prevent short circuits.\u003c\/li\u003e\n\u003cli\u003eDo not use batteries with damaged wrappers, torn insulators, rust, odor, leakage, deformation, or visible damage.\u003c\/li\u003e\n\u003cli\u003eFollow the manufacturer's charging specifications. Avoid overcharging, over-discharging, trickle charging, or reverse polarity use.\u003c\/li\u003e\n\u003cli\u003eDo not alter, dismantle, puncture, crush, burn, immerse in liquid, or expose cells to open flame.\u003c\/li\u003e\n\u003cli\u003eDo not expose batteries to high temperatures, direct sunlight in vehicles, open flame, water, or other liquids.\u003c\/li\u003e\n\u003cli\u003eDo not carry loose cells in pockets, bags, or toolboxes where they can contact keys, coins, tools, or other metal objects.\u003c\/li\u003e\n\u003cli\u003eBatteries should only be spot welded by experienced builders. Do not solder directly onto battery terminals.\u003c\/li\u003e\n\u003cli\u003eKeep away from children and pets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsers are expected to have battery-handling knowledge before purchasing. By using these batteries, you acknowledge that usage is solely at your own risk, and you take full responsibility for any resulting consequences.\u003c\/p\u003e\n\u003ch3 class=\"battery-cell-section-heading\"\u003e\u003cstrong\u003eFor Resellers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePlease ensure all safety information is passed along to end users to promote safe handling and proper use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e```\u003c\/p\u003e","brand":"Linkdata","offers":[{"title":"Default Title","offer_id":42924396380231,"sku":"LD-55P-21700-5500-50A","price":9.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/105639F0-4F03-4FA9-A17B-C4FF0F1F5B27.jpg?v=1783010141","url":"https:\/\/diy500amp.com\/products\/linkdata-55p-21700-cell-5500mah-50a-lithium-ion-battery","provider":"DIY500AMP.COM","version":"1.0","type":"link"}