{"title":"Tabless 21700 Batteries","description":"\u003cp\u003eTabless 21700 batteries refer to lithium-ion cells designed with advanced internal construction aimed at improving current flow and reducing internal resistance. These designs support more efficient energy delivery and are associated with newer developments in cylindrical battery technology.\u003c\/p\u003e\n\n\u003cp\u003eThe 21700 format is commonly used in high-performance and energy-dense applications, making it a key platform for advancements in cell design.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is Tabless Technology?\u003c\/h3\u003e\n\u003cp\u003eTraditional lithium-ion cells use internal tabs to connect electrode materials. Tabless or reduced-tab designs aim to improve current distribution within the cell, which can enhance efficiency and thermal performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp\u003e\n✔ Improved Current Flow – Designed to reduce internal resistance\u003cbr\u003e\n✔ Enhanced Efficiency – Supports more consistent energy delivery\u003cbr\u003e\n✔ Advanced Cell Design – Reflects newer lithium-ion construction methods\u003cbr\u003e\n✔ High Performance Potential – Suitable for demanding applications\n\u003c\/p\u003e\n\n\u003ch3\u003eManufacturers \u0026amp; Cell Development\u003c\/h3\u003e\n\u003cp\u003eManufacturers such as EVE, Tenpower, Reliance, and Ampace have introduced cell designs focused on improving current flow and efficiency. These developments are part of broader advancements in lithium-ion battery technology.\u003c\/p\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cp\u003e\n✔ High-Performance Battery Packs – Used in advanced energy systems\u003cbr\u003e\n✔ Power-Dense Applications – Suitable for builds requiring efficient current delivery\u003cbr\u003e\n✔ EV \u0026amp; Energy Storage Systems – Common in larger-scale battery applications\u003cbr\u003e\n✔ DIY \u0026amp; Custom Projects – Used by advanced builders exploring newer cell technologies\n\u003c\/p\u003e\n\n\u003ch3\u003eAvailability Note\u003c\/h3\u003e\n\u003cp\u003eNot all 21700 cells are truly tabless, and design approaches can vary by manufacturer and model. Always refer to verified specifications when selecting a battery.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eAlways verify specifications and compatibility with your application, including discharge requirements and battery configuration.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Note\u003c\/h3\u003e\n\u003cp\u003eBattery selection should be based on verified specifications rather than terminology alone. Ensure the battery meets your application requirements.\u003c\/p\u003e\n\n\u003cp\u003eBrowse our selection of tabless 21700 batteries to explore advanced lithium-ion cell designs.\u003c\/p\u003e","products":[{"product_id":"eve-40pl-21700-4000mah-70a-battery","title":"EVE 40PL 21700 4000mAh 70A Tabless Battery","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Output 21700 Cell:\u003c\/strong\u003e 4000mAh capacity optimized for demanding power requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e70A Continuous Discharge (Max):\u003c\/strong\u003e Supports extreme high-current applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlat-Top Configuration:\u003c\/strong\u003e Designed for high-performance battery systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Voltage Profile:\u003c\/strong\u003e 3.6V nominal with 4.2V maximum charge voltage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRechargeable \u0026amp; Unprotected:\u003c\/strong\u003e Intended for devices with proper protection circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003e\n  The \u003cstrong\u003eEVE 40PL 21700\u003c\/strong\u003e lithium-ion battery is built for high-demand applications where power output is critical. Delivering a\n  \u003cstrong\u003e70A maximum continuous discharge rating\u003c\/strong\u003e and dependable 21700-format capacity, this flat-top, unprotected cell supports\n  advanced battery packs and high-performance electronic systems.\n\u003c\/p\u003e\n\n\u003ch4\u003eApplications \/ Uses\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-current battery pack designs\u003c\/li\u003e\n  \u003cli\u003eIndustrial and professional power tools\u003c\/li\u003e\n  \u003cli\u003eEnergy storage and mobility platforms\u003c\/li\u003e\n  \u003cli\u003eCustom electronics requiring high discharge capability\u003c\/li\u003e\n  \u003cli\u003eReplacement cells for compatible 21700 power systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eEVE\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eModel:\u003c\/td\u003e\n\u003ctd\u003e40PL\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSize:\u003c\/td\u003e\n\u003ctd\u003e21700\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePositive Terminal:\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNominal Capacity:\u003c\/td\u003e\n\u003ctd\u003e4000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eContinuous Discharge Rating (Max):\u003c\/td\u003e\n\u003ctd\u003e70A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNominal Voltage:\u003c\/td\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Voltage:\u003c\/td\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDischarge Cut-off Voltage:\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProtected:\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRechargeable:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApprox. Dimensions:\u003c\/td\u003e\n\u003ctd\u003e21mm x 70.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApprox. Weight:\u003c\/td\u003e\n\u003ctd\u003e65g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\n  \u003ca title=\"EVE 40PL Datasheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/inr21700-40pl.pdf?v=1747690841\" target=\"_blank\" rel=\"noopener\"\u003eData Specification Sheet\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003chr\u003e","brand":"EVE","offers":[{"title":"Default Title","offer_id":44528908632121,"sku":"EVE-40PL","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/EVE-40PL.jpg?v=1747861263"},{"product_id":"ampace-jp40-21700-4000mah-70a-battery","title":"Ampace JP40 21700 4000mAh 70A Tabless Battery","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003e70A High Discharge:\u003c\/strong\u003e Handles extreme current draw with ease, supporting up to 70A continuous output.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003e4000mAh Capacity:\u003c\/strong\u003e Delivers extended runtime for e-bikes, tool packs, and power-intensive builds.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eFast Charging Ready:\u003c\/strong\u003e Supports 8A max charge current for reduced downtime during use.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eLong Cycle Life:\u003c\/strong\u003e Retains 60% capacity after 600 cycles at 30A, ensuring performance longevity.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Range:\u003c\/strong\u003e Discharges from -30°C to 75°C, ideal for harsh environments.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cbr\u003e\r\n\u003cp\u003eThe Ampace JP40 is a rugged 21700 Li-ion cell engineered for demanding energy systems. With a 70A max continuous discharge, this cell is designed to push performance boundaries while maintaining thermal stability and long-term reliability. Whether you're building an EV battery pack or a high-drain industrial system, the JP40 offers a balanced combination of power, speed, and cycle life.\u003c\/p\u003e\r\n\u003cbr\u003e\r\n\u003ch4\u003eApplications\/Uses\u003c\/h4\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003ee-Bikes \u0026amp; e-Motorcycles:\u003c\/strong\u003e Power systems that demand high output and thermal stability.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003ePower Tool Packs:\u003c\/strong\u003e Reliable energy for heavy-duty applications with short burst requirements.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eCustom Energy Systems:\u003c\/strong\u003e Great for robotics, drones, and battery banks with extreme demands.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eOutdoor Equipment:\u003c\/strong\u003e Operates in cold or hot conditions without performance compromise.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eDIY Projects:\u003c\/strong\u003e Ideal for builders seeking top-tier high-drain 21700 cells.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cbr\u003e\r\n\u003ch4\u003eSPECIFICATIONS\u003c\/h4\u003e\r\n\u003cdiv class=\"table-wrapper\"\u003e\r\n  \u003ctable\u003e\r\n    \u003ctbody\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eAmpace\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eModel:\u003c\/td\u003e\n\u003ctd\u003eJP40\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eSize:\u003c\/td\u003e\n\u003ctd\u003e21700\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003ePositive Terminal:\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eNominal Capacity:\u003c\/td\u003e\n\u003ctd\u003e4000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eContinuous Discharge Rating:\u003c\/td\u003e\n\u003ctd\u003e60A (No cutoff), 70A (with temp cutoff)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003ePulse Discharge (5s):\u003c\/td\u003e\n\u003ctd\u003e140A\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eNominal Voltage:\u003c\/td\u003e\n\u003ctd\u003e3.7V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eMaximum Voltage:\u003c\/td\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eDischarge Cut-Off Voltage:\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eStandard Charge Current:\u003c\/td\u003e\n\u003ctd\u003e4A\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eFast Charge Current:\u003c\/td\u003e\n\u003ctd\u003e8A\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eCycle Life:\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;=2400mAh after 600 cycles @ 30A\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eOperating Temperature:\u003c\/td\u003e\n\u003ctd\u003e-30°C to 75°C (discharge) \/ 0°C to 60°C (charge)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eRechargeable:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eApprox. Dimensions:\u003c\/td\u003e\n\u003ctd\u003e21.1mm x 70.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eApprox. Weight:\u003c\/td\u003e\n\u003ctd\u003e68g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eProtected:\u003c\/td\u003e\n\u003ctd\u003eNo, Unprotected\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eCountry of Origin:\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\r\n      \u003ctr\u003e\n\u003ctd\u003eData Sheet:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/Ampace_JP40_21700_Li.pdf?v=1755641185\" target=\"_blank\" rel=\"noopener\"\u003eAmpace JP40 Datasheet\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\r\n    \u003c\/tbody\u003e\r\n  \u003c\/table\u003e\r\n\u003c\/div\u003e\r\n","brand":"Ampace","offers":[{"title":"Default Title","offer_id":44804526407737,"sku":"AMPACE-JP40","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/AMPACE-JP40.jpg?v=1763074675"},{"product_id":"reliance-rs50-21700-5000mah-70a-battery","title":"Reliance RS50 21700 5000mAh 70A Tabless Battery","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eLong-Lasting Power:\u003c\/strong\u003e 5000mAh capacity supports extended use between charges.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExtreme Output Capability:\u003c\/strong\u003e Delivers up to 70A continuous discharge for demanding devices.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced Performance:\u003c\/strong\u003e INR chemistry provides stability, safety, and strong energy delivery.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Steel shell with built-in pressure relief protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Suitable for high-drain battery packs and professional-grade equipment.\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eOverview\u003c\/h4\u003e \u003cp\u003eThe Reliance RS50 is a powerful 21700 lithium-ion battery designed for applications that require both high capacity and extreme current output. With a 5000mAh nominal capacity and a 70A continuous discharge rating, this flat top cell delivers reliable, consistent performance. Its durable design and advanced chemistry make it an excellent choice for demanding power systems.\u003c\/p\u003e \u003ch4\u003eApplications \/ Uses\u003c\/h4\u003e \u003cul\u003e \u003cli\u003eHigh-power battery pack builds\u003c\/li\u003e \u003cli\u003eElectric tools and transport devices\u003c\/li\u003e \u003cli\u003eIndustrial and professional equipment\u003c\/li\u003e \u003cli\u003eHigh-current electronic systems\u003c\/li\u003e \u003cli\u003eCustom power solutions\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eReliance\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRS50\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCell Size\u003c\/td\u003e\n\u003ctd\u003e21700\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003ePositive Terminal\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd\u003e5000mAh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMinimum Capacity\u003c\/td\u003e\n\u003ctd\u003e4850mAh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eContinuous Discharge\u003c\/td\u003e\n\u003ctd\u003e70A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003ePulse Discharge (5s)\u003c\/td\u003e\n\u003ctd\u003e140A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMaximum Voltage\u003c\/td\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDischarge Cut-off Voltage\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eProtected\u003c\/td\u003e\n\u003ctd\u003eNo (Unprotected)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eStandard Charge Current\u003c\/td\u003e\n\u003ctd\u003e2500mA\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eFast Charge Current\u003c\/td\u003e\n\u003ctd\u003e5000mA\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCycle Life\u003c\/td\u003e\n\u003ctd\u003e≥80% capacity after 500 cycles\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30°C to 75°C (Discharge) \/ 0°C to 60°C (Charge)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eRechargeable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eApprox. Dimensions\u003c\/td\u003e\n\u003ctd\u003e21.0mm x 70.2mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eApprox. Weight\u003c\/td\u003e\n\u003ctd\u003e66g\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/Reliance_21700_RS50_5000mAh_70A_Battery_Datasheet.pdf?v=1755714280\" target=\"_blank\" rel=\"noopener\"\u003eReliance 21700 RS50 5000mAh 70A Battery Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"RELIANCE","offers":[{"title":"Default Title","offer_id":44845493256249,"sku":"RELIANCE-RS50","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/RELIANCE-RS50_e65da72f-91fb-416e-9e2a-709eb678cbf1.jpg?v=1776369848"},{"product_id":"reliance-rs40-21700-4000mah-70a-battery","title":"Reliance RS40 21700 4000mAh 70A Tabless Battery","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eLong-Lasting Power:\u003c\/strong\u003e 4000mAh capacity supports extended use.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExtreme Output Capability:\u003c\/strong\u003e Delivers up to 70A continuous discharge.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStable Performance:\u003c\/strong\u003e INR chemistry provides balanced power and thermal stability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRugged Design:\u003c\/strong\u003e Steel casing with built-in safety venting.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePack-Ready Cell:\u003c\/strong\u003e Designed for use in professionally assembled battery packs.\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eOverview\u003c\/h4\u003e \u003cp\u003eThe Reliance RS40 is a powerful 21700 lithium-ion battery designed for high-drain applications that demand both strength and reliability. With a 4000mAh nominal capacity and an impressive 70A continuous discharge rating, this flat top cell delivers outstanding performance in demanding environments. Its durable construction and consistent output make it a dependable choice for advanced power systems.\u003c\/p\u003e \u003ch4\u003eApplications \/ Uses\u003c\/h4\u003e \u003cul\u003e \u003cli\u003eHigh-power battery pack builds\u003c\/li\u003e \u003cli\u003eElectric mobility and transport devices\u003c\/li\u003e \u003cli\u003eIndustrial and professional equipment\u003c\/li\u003e \u003cli\u003eHigh-current electronics\u003c\/li\u003e \u003cli\u003eCustom power solutions\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSpecifications\u003c\/h4\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eReliance\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRS40\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCell Size\u003c\/td\u003e\n\u003ctd\u003e21700\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003ePositive Terminal\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd\u003e4000mAh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMinimum Capacity\u003c\/td\u003e\n\u003ctd\u003e3900mAh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eContinuous Discharge\u003c\/td\u003e\n\u003ctd\u003e70A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMaximum Voltage\u003c\/td\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDischarge Cut-off Voltage\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eProtected\u003c\/td\u003e\n\u003ctd\u003eNo (Unprotected)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eStandard Charge Current\u003c\/td\u003e\n\u003ctd\u003e2500mA\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCycle Life\u003c\/td\u003e\n\u003ctd\u003e≥80% capacity after 500 cycles\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to 60°C (Discharge), 0°C to 45°C (Charge)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eRechargeable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eApprox. Dimensions\u003c\/td\u003e\n\u003ctd\u003e21.55mm x 70.3mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eApprox. Weight\u003c\/td\u003e\n\u003ctd\u003e65g\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/RELIANCE-RS40_Datasheet.pdf?v=1757089817\" target=\"_blank\" rel=\"noopener\"\u003eReliance RS40 21700 4000mAh 70A Battery Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"RELIANCE","offers":[{"title":"Default Title","offer_id":44845535363129,"sku":"RELIANCE-RS40","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/RELIANCE-RS40_d61c898e-1137-412b-9c3a-7826396ca3d4.jpg?v=1776370603"},{"product_id":"bak-45d-21700-4500mah-60a-battery","title":"BAK 45D 21700 4500mAh 60A Tabless Battery","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003e4500mAh Energy Reserve:\u003c\/strong\u003e High-capacity design ensures stable, extended operation.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003e60A Continuous Load Support:\u003c\/strong\u003e Built for applications requiring sustained heavy current draw.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Performance Li-ion Cell:\u003c\/strong\u003e Minimal internal resistance for improved efficiency.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eDurable Structure:\u003c\/strong\u003e Rated for 600+ cycles with proper thermal management.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003e21700 High-Density Format:\u003c\/strong\u003e Increased volume allows improved thermal and energy performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003eThe BAK 45D 21700 cell is a robust lithium-ion battery engineered for systems requiring high current, long cycle life, and stable voltage output.  \r\nIts 60A discharge capability makes it suitable for advanced powertrains, industrial equipment, and custom-built battery packs.  \r\nThis unprotected flat-top cell is intended for integration into professionally designed BMS-controlled battery systems.\u003c\/p\u003e\r\n\r\n\u003ch4\u003eApplications\/Uses\u003c\/h4\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEV Battery Modules:\u003c\/strong\u003e Provides strong current delivery for electric mobility solutions.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial Tooling:\u003c\/strong\u003e Supports demanding torque and power requirements.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEnergy Storage Banks:\u003c\/strong\u003e Great for solar storage, UPS systems, and modular ESS units.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Drain R\/C \u0026amp; Robotics:\u003c\/strong\u003e Delivers reliable power for motors and actuators.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Illumination:\u003c\/strong\u003e Ideal for high-power LED devices and tactical lights.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch4\u003eSPECIFICATIONS\u003c\/h4\u003e\r\n\u003cdiv class=\"table-wrapper\"\u003e\r\n\u003ctable\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eBrand:\u003c\/td\u003e\n\u003ctd\u003eBAK\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eModel:\u003c\/td\u003e\n\u003ctd\u003e45D\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eBattery Type:\u003c\/td\u003e\n\u003ctd\u003e21700\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eCapacity:\u003c\/td\u003e\n\u003ctd\u003e4500mAh\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage:\u003c\/td\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eFull Charge Voltage:\u003c\/td\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eDischarge Cutoff Voltage:\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eContinuous Discharge Rate:\u003c\/td\u003e\n\u003ctd\u003e60A (80°C cutoff)\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eRechargeable:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eProtected:\u003c\/td\u003e\n\u003ctd\u003eNo, Unprotected\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eCycle Life:\u003c\/td\u003e\n\u003ctd\u003e600+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eDiameter:\u003c\/td\u003e\n\u003ctd\u003e21.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eLength:\u003c\/td\u003e\n\u003ctd\u003e70.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e~70g\u003c\/td\u003e\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\u003c\/div\u003e\r\n","brand":"BAK","offers":[{"title":"Default Title","offer_id":45264489611321,"sku":"BAK-45D","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/BAK-45D.jpg?v=1766082110"},{"product_id":"tenpower-50xg-21700-5000mah-90a-battery","title":"TENPOWER 50XG 21700 5000mAh 90A Tabless Battery","description":"\u003ch4\u003eKey Features\u003c\/h4\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExtended Runtime:\u003c\/strong\u003e 5000mAh capacity provides long operating duration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh Current Output:\u003c\/strong\u003e Supports heavy loads with up to 40A continuous discharge.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTemperature-Controlled Performance:\u003c\/strong\u003e Capable of reaching 90A output with thermal cutoff protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEfficient Power Delivery:\u003c\/strong\u003e Low internal resistance helps maintain voltage stability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePack-Ready Cell:\u003c\/strong\u003e Flat top unprotected format designed for professionally managed battery systems.\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eOverview\u003c\/h4\u003e \u003cp\u003eThe TENPOWER 50XG 21700 battery is built for applications where both high power and strong capacity are required. Its advanced INR lithium-ion chemistry and ultra-low resistance design enable excellent performance in demanding electrical systems. This cell is shipped at approximately 30% state of charge to improve storage safety and is best suited for integration into engineered battery packs with proper protection and thermal management.\u003c\/p\u003e \u003ch4\u003eApplications \/ Uses\u003c\/h4\u003e \u003cul\u003e \u003cli\u003eElectric bikes and scooters\u003c\/li\u003e \u003cli\u003eHigh-current battery pack builds\u003c\/li\u003e \u003cli\u003eIndustrial tools and equipment\u003c\/li\u003e \u003cli\u003eAutomation and robotics systems\u003c\/li\u003e \u003cli\u003eEnergy storage and backup systems\u003c\/li\u003e \u003c\/ul\u003e \u003ch4\u003eSPECIFICATIONS\u003c\/h4\u003e \u003cdiv class=\"table-wrapper\"\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e\n\u003ctd\u003eBrand:\u003c\/td\u003e\n\u003ctd\u003eTENPOWER\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eModel:\u003c\/td\u003e\n\u003ctd\u003eINR21700-50XG\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eBattery Type:\u003c\/td\u003e\n\u003ctd\u003e21700 Lithium-Ion (INR)\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNominal Capacity:\u003c\/td\u003e\n\u003ctd\u003e5000mAh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMinimum Capacity:\u003c\/td\u003e\n\u003ctd\u003e4950mAh\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eNominal Voltage:\u003c\/td\u003e\n\u003ctd\u003e3.6V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eFull Charge Voltage:\u003c\/td\u003e\n\u003ctd\u003e4.2V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDischarge Cutoff Voltage:\u003c\/td\u003e\n\u003ctd\u003e2.5V\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMax Continuous Discharge:\u003c\/td\u003e\n\u003ctd\u003e40A \/ 90A with cutoff\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMax Pulse Discharge:\u003c\/td\u003e\n\u003ctd\u003e140A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eStandard Charge Rate:\u003c\/td\u003e\n\u003ctd\u003e2.5A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eMax Charging Current:\u003c\/td\u003e\n\u003ctd\u003e15A\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eInternal Resistance:\u003c\/td\u003e\n\u003ctd\u003e≤4mΩ\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eCycle Life:\u003c\/td\u003e\n\u003ctd\u003e≥500 cycles\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eBattery Top:\u003c\/td\u003e\n\u003ctd\u003eFlat Top\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eProtected:\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eDimensions:\u003c\/td\u003e\n\u003ctd\u003e≤21.50mm x ≤70.50mm\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e≤71g\u003c\/td\u003e\n\u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003chr\u003e","brand":"TENPOWER","offers":[{"title":"Default Title","offer_id":45609345712185,"sku":"TENPOWER-50XG","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/0125\/3945\/files\/TENPOWER-50XG.jpg?v=1777996887"}],"url":"https:\/\/imrbatteries.com\/collections\/tabless-21700-batteries.oembed","provider":"IMR Batteries","version":"1.0","type":"link"}