{"product_id":"eve-inr21700-40pl-4000mah-70a-li-ion-battery-for-power-tools-e-bikes-diy-battery-packs-1-100-pcs","title":"EVE INR21700-40PL 4000mAh 70A Li-ion Battery for Power Tools, E-Bikes \u0026 DIY Battery Packs (1-100 PCS)","description":"\u003cdiv style=\"border-left: 3px solid #d9d9d9; padding: 14px 18px; margin-bottom: 22px;\"\u003e\n\u003cp style=\"margin: 0 0 12px; font-size: 18px; font-weight: bold; color: #1b16d8;\"\u003e🌐 Global Shipping from China – Rates \u0026amp; Delivery Times\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003e\u003ca href=\"https:\/\/dxf-hobby.store\/pages\/china-warehouse-shipping\" rel=\"noopener\" style=\"color: #d64224; text-decoration: underline;\" target=\"_blank\"\u003ehttps:\/\/dxf-hobby.store\/pages\/china-warehouse-shipping\u003c\/a\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eChoose your pack quantity (1–100 PCS) — genuine EVE INR21700-40PL extreme-power 4000mAh continuous discharge up to 70A lithium-ion cells for heavy-duty cordless power tools, electric racing mobility, and custom DIY high-power battery projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0484\/7691\/3827\/files\/dxf_552c7b88-2609-4f84-bed1-943e60c00cc8.png?v=1764311930\" alt=\"DXF global warehouse delivery network\" style=\"width: 100%; height: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eEVE INR21700-40PL 4000mAh 70A Continuous Discharge 21700 Li-ion Rechargeable Battery\u003c\/strong\u003e is an ultra-high-drain cylindrical power cell manufactured by EVE Energy and supplied by DXF POWER with strict quality grading. Engineered specifically for high-load industrial machinery and extreme-rate battery pack construction, this flat-top bare cell delivers 4000mAh nominal capacity on a 3.6V nominal platform with an industry-leading continuous discharge capability of up to 70A. Featuring cutting-edge electrode formulation, ultra-low internal impedance, and exceptional heat tolerance, the EVE 40PL delivers sustained current under demanding loads with minimal voltage depression, making it the premier choice for heavy-duty cordless tools, electric racing bikes, electric watercraft, and custom DIY high-output power modules.\u003c\/p\u003e\n\u003ch2\u003eWatch DXF Batteries in Action\u003c\/h2\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/9yfcgnfSTk0\" title=\"Watch DXF Batteries in Action\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine EVE INR21700-40PL Cell:\u003c\/strong\u003e Authentic Grade-A 21700 cylindrical cell engineered by EVE Energy for extreme-output applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4000mAh High Capacity:\u003c\/strong\u003e Generous 4000mAh capacity provides an ideal balance between sustained high energy density and extreme power delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme 70A Continuous Discharge:\u003c\/strong\u003e Delivers continuous discharge current up to 70A, built to handle heavy motor starts and high-draw demands\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Internal Resistance:\u003c\/strong\u003e Advanced tab and electrode construction minimizes thermal rise and preserves voltage under heavy loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5C–1C Flexible Charging:\u003c\/strong\u003e Supports reliable CC-CV charging from 2.0A (0.5C) up to 4.0A (1C) for efficient recharges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 21700 Flat-Top Format:\u003c\/strong\u003e Dimensions of 21.1 mm diameter × 70.1 mm length and ~67 g weight, ideal for precision spot welding and pack assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Pack Bundles:\u003c\/strong\u003e Available in 1, 10, 20, 50, and 100 piece packages for individual tool rebuilds or volume battery pack production\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict Factory Quality Testing:\u003c\/strong\u003e Cells are inspected for voltage balance, internal resistance, and capacity consistency across every batch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications, Per Battery\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \/ Manufacturer:\u003c\/strong\u003e EVE (EVE Energy Co., Ltd. \/ Supplied by DXF POWER)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel \/ Part No.:\u003c\/strong\u003e INR21700-40PL (40PL)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Format:\u003c\/strong\u003e 21700 Cylindrical Rechargeable Lithium-ion (Li-ion)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Chemistry:\u003c\/strong\u003e Lithium-Nickel-Manganese-Cobalt (INR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositive Pole:\u003c\/strong\u003e Flat (Flat Top)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Electronics:\u003c\/strong\u003e No (Unprotected industrial bare cell; requires compatible high-drain BMS \/ protection circuit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Capacity:\u003c\/strong\u003e 4000mAh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 3.6V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Voltage (Charge):\u003c\/strong\u003e 4.2V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Voltage (Cut-Off):\u003c\/strong\u003e 2.5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Current:\u003c\/strong\u003e Up to 70A continuous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging Current:\u003c\/strong\u003e 0.5C to 1C (approx. 2A to 4A CC-CV)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging Method:\u003c\/strong\u003e Constant Current \/ Constant Voltage (CC-CV)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Dimensions:\u003c\/strong\u003e Diameter: 21.1 mm × Length: 70.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Weight:\u003c\/strong\u003e Approx. 67 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Extreme-power cordless power tools, electric racing motorcycles, high-wattage e-bikes, electric skateboards, lawn and garden equipment, and custom DIY high-power battery packs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEVE INR21700-40PL 4000mAh 70A battery cells, quantity chosen from 1, 10, 20, 50, or 100 PCS\u003c\/li\u003e\n\u003cli\u003eProtective packaging \/ cell box\u003c\/li\u003e\n\u003cli\u003eUser manual and battery safety guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eChoose Your Ideal Power Bundle\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 PCS – Single Cell Replacement:\u003c\/strong\u003e Quick replacement for high-drain torches, individual test benches, or handheld tools\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 PCS – High-Power Tool Modules:\u003c\/strong\u003e Ideal for building heavy-duty 5-cell \/ 10-cell 18V-20V cordless power tool packs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 PCS – High-Output Mobile Modules:\u003c\/strong\u003e Perfect for 36V\/40V lawn mowers, industrial power equipment, and robotics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 PCS – E-Bike \u0026amp; Motorcycle Battery Packs:\u003c\/strong\u003e Optimized quantity for assembling high-current 48V\/60V\/72V electric vehicle packs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 PCS – Volume Assembly Bulk Set:\u003c\/strong\u003e Best value for workshops, battery rebuilders, and custom pack manufacturers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePurchasing in bundles ensures matched cell batches for balanced series and parallel assembly.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e180-Day Warranty \u0026amp; Customer Support\u003c\/h2\u003e\n\u003cp\u003eEvery cell batch supplied by DXF POWER is covered by a \u003cstrong\u003e180-day manufacturer warranty\u003c\/strong\u003e against defects in materials and craftsmanship. Our technical support team is always available to assist with charging parameters, pack layout recommendations, and safety practices.\u003c\/p\u003e\n\u003ch2\u003eUsage \u0026amp; Safety Guidelines\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUse a dedicated lithium-ion smart charger supporting CC\/CV charging mode up to 4.20V.\u003c\/li\u003e\n\u003cli\u003eNever charge above 4.25V per cell or discharge below 2.50V per cell.\u003c\/li\u003e\n\u003cli\u003eNever exceed the maximum continuous discharge current rating of 70A.\u003c\/li\u003e\n\u003cli\u003eAlways inspect cell outer shrink wrap, insulator ring, and terminals for damage before use; rewrap immediately if damaged.\u003c\/li\u003e\n\u003cli\u003eNever carry loose 21700 batteries in pockets, bags, or purses with metal objects like keys or coins; practical storage in an insulated battery case is essential.\u003c\/li\u003e\n\u003cli\u003eDo not short-circuit, crush, incinerate, puncture, or submerge cells in water.\u003c\/li\u003e\n\u003cli\u003eStore batteries at 3.60V–3.85V per cell in a cool, dry, well-ventilated location away from direct sunlight.\u003c\/li\u003e\n\u003cli\u003eWhen building multi-cell packs, always integrate a quality high-current Battery Management System (BMS) with over-current, over-charge, over-discharge, and thermal balance protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose DXF?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Grade-A EVE INR21700-40PL cells with authentic 4000mAh capacity and up to 70A continuous output\u003c\/li\u003e\n\u003cli\u003eExtreme-rate INR chemistry with ultra-low internal impedance and robust thermal stability\u003c\/li\u003e\n\u003cli\u003eCarefully matched batches for balanced series and parallel pack assembly\u003c\/li\u003e\n\u003cli\u003eStrict factory pre-shipment quality checks and secure protective packaging\u003c\/li\u003e\n\u003cli\u003eGlobal warehouse logistics network and professional technical customer support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cp\u003eEngineered for power tool rebuilders, EV mechanics, and DIY pack fabricators demanding extreme continuous discharge up to 70A, 4000mAh capacity, and ultra-low internal resistance for heavy-duty tools, high-speed electric mobility, and custom energy modules.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePower your projects with trusted EVE performance.\u003c\/strong\u003e Learn more about setups and battery care on the \u003ca href=\"https:\/\/www.youtube.com\/@stevehou8316\" rel=\"noopener\" target=\"_blank\"\u003eDXF YouTube channel\u003c\/a\u003e.\u003c\/p\u003e","brand":"DXF POWER","offers":[{"title":"1PCS INR21700-40PL-4000MAH BATTERY","offer_id":46166085533859,"sku":"INR21700-40PL-4000mAh-1PCS","price":23.85,"currency_code":"USD","in_stock":true},{"title":"10PCS INR21700-40PL-4000MAH BATTERY","offer_id":46166085566627,"sku":"INR21700-40PL-4000mAh-10PCS","price":78.6,"currency_code":"USD","in_stock":true},{"title":"20PCS INR21700-40PL-4000MAH BATTERY","offer_id":46166085599395,"sku":"INR21700-40PL-4000mAh-20PCS","price":139.44,"currency_code":"USD","in_stock":true},{"title":"50PCS INR21700-40PL-4000MAH BATTERY","offer_id":46166085632163,"sku":"INR21700-40PL-4000mAh-50PCS","price":321.95,"currency_code":"USD","in_stock":true},{"title":"100PCS INR21700-40PL-4000MAH BATTERY","offer_id":46166085664931,"sku":"INR21700-40PL-4000mAh-100PCS","price":626.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0484\/7691\/3827\/files\/1_3057c418-8f3c-4087-8f44-99b6c09a2793.png?v=1790826719","url":"https:\/\/dxf-hobby.store\/products\/eve-inr21700-40pl-4000mah-70a-li-ion-battery-for-power-tools-e-bikes-diy-battery-packs-1-100-pcs","provider":"DXF POWER","version":"1.0","type":"link"}