{"product_id":"eve-inr21700-40p-4000mah-40a-li-ion-battery-for-power-tools-e-bikes-diy-battery-packs-1-100-pcs","title":"EVE INR21700-40P 4000mAh 40A 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 INR21700-40P ultra-high-drain 4000mAh 40A continuous lithium-ion cells for heavy-duty cordless power tools, high-power electric bicycles, and custom DIY 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 INR21700-40P 4000mAh 40A Continuous Discharge 21700 Li-ion Rechargeable Battery\u003c\/strong\u003e is an industrial powerhouse cell manufactured by EVE Energy and supplied by DXF POWER with strict quality grading. Built for extreme current demands, this flat-top bare cell delivers a generous 4000mAh nominal capacity on a 3.6V nominal platform with a formidable 40A (10C) continuous discharge rating and an ultra-low internal resistance of just 9.1 mΩ. Supporting high-speed charging up to 6A, the EVE 40P minimizes voltage sag under aggressive power loads while maintaining superior thermal stability, making it one of the most capable 21700 bare cells on the market for cordless heavy-duty power tools, high-performance electric motorcycles, e-bikes, and custom DIY battery packs.\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 INR21700-40P Cell:\u003c\/strong\u003e Authentic Grade-A 21700 cylindrical bare cell manufactured by global lithium-ion leader EVE Energy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4000mAh High-Drain Capacity:\u003c\/strong\u003e 4000mAh nominal capacity provides an exceptional balance of substantial runtime and massive current output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40A Continuous Discharge (10C):\u003c\/strong\u003e Massive 40A continuous discharge rating delivers uninterrupted power for heavy motor drives and high-wattage equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Internal Resistance (9.1 mΩ):\u003c\/strong\u003e Minimal internal impedance ensures exceptional voltage retention under sustained maximum loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid 6A Fast Charging:\u003c\/strong\u003e Supports up to 6A maximum charging current for fast turnaround times in high-demand environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium INR Chemistry:\u003c\/strong\u003e Lithium-Nickel-Manganese-Cobalt chemistry engineered for thermal resilience and cycle longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 21700 Flat-Top Design:\u003c\/strong\u003e Dimensions of 21.2 mm diameter × 70.0 mm length and ~68 g weight, ideal for precision spot welding and pack fabrication\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 repairs or volume battery assembly\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 INR21700-40P (40P)\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 Circuit:\u003c\/strong\u003e Without (Unprotected industrial bare cell; requires compatible 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\u003eCharging Voltage:\u003c\/strong\u003e 4.20V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Cut-Off Voltage:\u003c\/strong\u003e 2.50V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Discharge Current:\u003c\/strong\u003e 40A continuous (10C rate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Resistance:\u003c\/strong\u003e Approx. 9.1 mΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Charging Current:\u003c\/strong\u003e 6A (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: 21.2 mm × Length: 70.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Weight:\u003c\/strong\u003e Approx. 68 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Heavy-duty cordless power tools, electric motorcycles, high-power electric bicycles (e-bikes), electric skateboards, lawn and garden machinery, and custom DIY battery packs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEVE INR21700-40P 4000mAh 40A 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 of 40A.\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 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 INR21700-40P cells with authentic 4000mAh capacity and 40A continuous output\u003c\/li\u003e\n\u003cli\u003eHigh-discharge INR chemistry with ultra-low 9.1 mΩ internal resistance and 6A rapid charging\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 40A continuous discharge, 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 EVE INR21700-40P 4000mah BATTERY","offer_id":46167466868899,"sku":"INR21700-40P-4000mAh-1PCS","price":23.24,"currency_code":"USD","in_stock":true},{"title":"10PCS EVE INR21700-40P 4000mah BATTERY","offer_id":46167466901667,"sku":"INR21700-40P-4000mAh-10PCS","price":72.52,"currency_code":"USD","in_stock":true},{"title":"20PCS EVE INR21700-40P 4000mah BATTERY","offer_id":46167466934435,"sku":"INR21700-40P-4000mAh-20PCS","price":127.27,"currency_code":"USD","in_stock":true},{"title":"50PCS EVE INR21700-40P 4000mah BATTERY","offer_id":46167466967203,"sku":"INR21700-40P-4000mAh-50PCS","price":291.53,"currency_code":"USD","in_stock":true},{"title":"100PCS EVE INR21700-40P 4000mah BATTERY","offer_id":46167466999971,"sku":"INR21700-40P-4000mAh-100PCS","price":565.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0484\/7691\/3827\/files\/1_4c0e9fb9-0f0a-456d-b57f-fbf40cd2009c.png?v=1790826305","url":"https:\/\/dxf-hobby.store\/vi-de\/products\/eve-inr21700-40p-4000mah-40a-li-ion-battery-for-power-tools-e-bikes-diy-battery-packs-1-100-pcs","provider":"DXF POWER","version":"1.0","type":"link"}