{"product_id":"eve-inr21700-40p-4000mah-12c-battery-10-pack","title":"EVE INR21700-40P 21700 Battery 4000mAh 3.7V 12C High-Drain Li-ion Rechargeable Cell - A+ Grade, True Capacity, Ultra-High 50A Discharge for E-Bikes, Power Tools, Energy Storage \u0026 DIY Battery Packs (10-Pack, Flat Top \/ Button Top \/ Nickel Tab Options)","description":"\u003ch3\u003e\u003cspan class=\"\"\u003e【Product Description】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUltra-High Power Cells for the Most Demanding Applications!\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eEVE INR21700-40P 4000mAh 3.7V Li-ion Battery\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eis a premium A+ grade power cell engineered for extreme high-drain performance. With an\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eultra-high 12C discharge rate (50A continuous)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, it delivers raw, unrelenting power for e-bikes, power tools, energy storage systems, and demanding DIY battery pack projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eBuilt with a true\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e4000mAh capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eand a stable\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3.7V nominal voltage\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, this battery ensures reliable performance even under heavy loads. Its low internal resistance and robust construction make it the ideal choice for applications where instantaneous bursts of power are critical.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eAvailable in\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlat Top (70mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e,\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eButton Top (72mm)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, and\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNickel Tab\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eversions, this 10-pack is the perfect choice for DIY battery pack builders, e-bike enthusiasts, and repair shops.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003e( IMPORTANT: Please select your preferred terminal type.\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlat Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eis 70mm and fits most modern devices.\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eButton Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eis 72mm and adds ~2mm length for older spring-loaded devices.\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNickel Tab\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ecomes pre-welded for easy DIY pack assembly. Please check your device's battery bay depth before ordering!)\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Key Features】\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eUltra-High 12C Discharge (50A)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Premium A+ grade power cell delivering a massive 50A continuous output, perfect for e-bikes, power tools, and high-drain applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eA+ Grade True Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Real tested capacity of 4000mAh with stable 3.7V nominal voltage, ensuring you get exactly what you pay for.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLow Internal Resistance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Engineered for minimal heat generation and stable voltage under heavy load.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLong Cycle Life\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Withstands hundreds of charge\/discharge cycles for long-term economic value.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eAvailable in Flat Top, Button Top \u0026amp; Nickel Tab\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Choose the terminal that fits your specific device or DIY project.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e10-Pack Value\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Perfect for DIY battery pack builders, e-bike enthusiasts, repair shops, and anyone who needs a reliable stock of high-drain 21700 cells.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Parameters \u0026amp; Specifications】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBrand\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: EVE\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: INR21700-40P\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBattery Type\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Li-ion Rechargeable Battery\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Voltage\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 3.7V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNominal Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 4000mAh\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFull Charge Voltage\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 4.2V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMax Continuous Discharge Current\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 50A (12C)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eTerminal Options\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Flat Top (70mm) \/ Button Top (72mm) \/ Nickel Tab\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDimensions\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 21mm (Dia) × 70mm \/ 72mm (Height)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Approx. 70g (per battery)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSafety Features\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Built-in Safety Valve, Explosion-Proof Design\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQuantity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: 10 Batteries\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Applications】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eE-Bikes \u0026amp; E-Scooters\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: High-current discharge for electric bikes and scooters.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePower Tools\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Cordless drills, screwdrivers, and other high-drain tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eEnergy Storage Systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Reliable power for portable power stations and solar storage.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Lumen Flashlights\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Powers tactical and high-output flashlights.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDIY Battery Packs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e: Ideal for custom 1S\/2S\/3S packs for robotics and portable power stations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e【Frequently Asked Questions (FAQ)】\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What is the difference between Flat Top, Button Top, and Nickel Tab?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA1:\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFlat Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e(70mm) fits most modern devices.\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eButton Top\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e(72mm) has a raised terminal for older spring-loaded devices and adds ~2mm length.\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNickel Tab\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ecomes pre-welded with nickel strips for easy DIY battery pack assembly. Please measure your device's battery bay before ordering!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: Is the capacity really 4000mAh?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA2: Yes! As an A+ grade cell, each battery is tested with precision instruments to ensure a\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003etrue capacity of 4000mAh\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. We do not exaggerate our specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: What is the discharge rate of this battery?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA3: This battery supports an\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eultra-high 12C continuous discharge (50A)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, making it a true high-drain power cell for demanding applications like e-bikes and power tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Is this battery safe to use?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA4: Absolutely. It features a built-in safety valve and an explosion-proof design to prevent leakage and short circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: What charger should I use?\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"\"\u003eA5: Use a dedicated intelligent Li-ion charger designed for 3.7V\/4.2V cells. Match the charger to your specific pack configuration.\u003c\/span\u003e\u003c\/p\u003e","brand":"EVE","offers":[{"title":"Button Top","offer_id":51625402794230,"sku":"OAS2251","price":79.98,"currency_code":"USD","in_stock":true},{"title":"Flat Top","offer_id":51625402826998,"sku":"OAS2252","price":78.98,"currency_code":"USD","in_stock":true},{"title":"Nickel Tab","offer_id":51625402859766,"sku":"OAS2253","price":79.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/2753\/6886\/files\/eve-inr21700-40p-4000mah-button-top-10-pack-main.webp?v=1789380033","url":"https:\/\/oneandes.com\/products\/eve-inr21700-40p-4000mah-12c-battery-10-pack","provider":"OneAndes","version":"1.0","type":"link"}