{"product_id":"molicel-inr21700-p42a-4200mah-45a-li-ion-battery-for-power-tools-e-bikes-diy-battery-packs-1-100-pcs","title":"Molicel INR21700-P42A 4200mAh 45A 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 Molicel INR21700-P42A ultra-high-drain 4200mAh 45A continuous lithium-ion cells for heavy-duty power tools, electric bicycles, racing motorsports, 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\u003eMolicel INR21700-P42A 4200mAh 45A Continuous Discharge 21700 Li-ion Rechargeable Battery\u003c\/strong\u003e is widely celebrated as one of the most reliable and capable ultra-high-drain 21700 cylindrical cells ever engineered, manufactured by E-One Moli Energy (Molicel) and supplied by DXF POWER with strict quality grading. Designed for demanding applications requiring massive power delivery and exceptional thermal endurance, this flat-top bare cell delivers 4200mAh nominal capacity on a 3.6V nominal platform with an extraordinary 45A constant continuous discharge capability and low internal resistance. Known for its perfect balance of high capacity, continuous current handling, and long cycle life, the P42A is the industry standard for electric bikes, high-performance battery packs, cordless power tools, robotics, and custom DIY battery builds.\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 Molicel INR21700-P42A Cell:\u003c\/strong\u003e Authentic Grade-A 21700 cylindrical cell engineered by E-One Moli Energy for extreme high-drain reliability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4200mAh High Capacity:\u003c\/strong\u003e Large 4200mAh nominal capacity provides substantial runtime while maintaining high-current discharge stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45A Constant Continuous Discharge:\u003c\/strong\u003e Massive 45A continuous discharge rating delivers uncompromising power output without thermal throttling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Internal Resistance:\u003c\/strong\u003e Minimizes operating heat buildup, maximizes power transfer efficiency, and maintains high voltage under load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutstanding Thermal Stability:\u003c\/strong\u003e Engineered to withstand sustained heavy current draws with superior thermal control and longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 21700 Flat-Top Design:\u003c\/strong\u003e Standard dimensions of 21.4 mm diameter × 70.2 mm length and ~67 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 replacements or large-scale pack fabrication\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 Molicel (E-One Moli Energy \/ Supplied by DXF POWER)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel \/ Part No.:\u003c\/strong\u003e INR-21700-P42A (P42A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Format:\u003c\/strong\u003e 21700 Cylindrical Rechargeable Lithium-ion (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 4200mAh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 3.6V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax. Charge Voltage:\u003c\/strong\u003e 4.2V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Cut-Off Voltage:\u003c\/strong\u003e 2.5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Discharge Rating:\u003c\/strong\u003e 45A\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\u003eCell Dimensions:\u003c\/strong\u003e Diameter: approx. 21.4 mm × Length: approx. 70.2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Weight:\u003c\/strong\u003e Approx. 67.0 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e High-performance battery packs, electric bikes \u0026amp; scooters (e-bikes), heavy-duty power tools, energy storage systems, racing \u0026amp; motorsports, and custom DIY lithium projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMolicel INR21700-P42A 4200mAh 45A 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 – Portable High-Drain Modules:\u003c\/strong\u003e Ideal for high-output dive lights, drone gear, and compact robotics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 PCS – High-Power Mobile Modules:\u003c\/strong\u003e Perfect for 18V\/24V cordless power tool battery rebuilds and portable power modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 PCS – E-Bike \u0026amp; Scooter Battery Packs:\u003c\/strong\u003e Optimized quantity for assembling high-current 36V\/48V light 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 45A.\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 Molicel INR21700-P42A cells with authentic 4200mAh capacity and 45A continuous output\u003c\/li\u003e\n\u003cli\u003eIndustry-standard high-drain chemistry with proven thermal stability and long cycle life\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 e-bike builders, power tool rebuilders, and DIY pack fabricators demanding authentic 45A continuous discharge, 4200mAh capacity, and robust thermal endurance for demanding electric mobility, heavy-duty cordless equipment, and custom energy modules.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePower your projects with trusted Molicel 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 MolicelINR21700 P42A 4200mAh  BATTERY","offer_id":67582991270051,"sku":"INR21700-P42A-4200mAh-1PCS","price":25.49,"currency_code":"USD","in_stock":true},{"title":"10PCS MolicelINR21700 P42A 4200mAh  BATTERY","offer_id":67582991302819,"sku":"INR21700-P42A-4200mAh-10PCS","price":92.59,"currency_code":"USD","in_stock":true},{"title":"20PCS MolicelINR21700 P42A 4200mAh  BATTERY","offer_id":67582991335587,"sku":"INR21700-P42A-4200mAh-20PCS","price":172.29,"currency_code":"USD","in_stock":true},{"title":"50PCS  MolicelINR21700 P42A 4200mAh  BATTERY","offer_id":67582991368355,"sku":"INR21700-P42A-4200mAh-50PCS","price":404.08,"currency_code":"USD","in_stock":true},{"title":"100PCS  MolicelINR21700 P42A 4200mAh  BATTERY","offer_id":67582991401123,"sku":"INR21700-P42A-4200mAh-100PCS","price":790.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0484\/7691\/3827\/files\/1_ac4d2533-5967-4ec8-85cb-c13d45372127.png?v=1790750761","url":"https:\/\/dxf-hobby.store\/zh-de\/products\/molicel-inr21700-p42a-4200mah-45a-li-ion-battery-for-power-tools-e-bikes-diy-battery-packs-1-100-pcs","provider":"DXF POWER","version":"1.0","type":"link"}