YFH-INR21700-40Q 4000mAh 21700 High-Drain Li-ion Cell

The 4000mAh 45A 21700 high drain cell is a 21700 rechargeable lithium-ion cell designed for high-power battery packs. It offers 4000mAh nominal capacity and up to 45A continuous discharge, with 70A supported when using an 80°C temperature cut-off.

Key Performance

• Nominal capacity: 4000mAh; minimum: 3900mAh

• Nominal voltage: 3.70V

• Max continuous discharge: 45A without temperature cut-off / 70A with 80°C cut-off

• Instantaneous discharge: 140A (5s pulse)

• Internal resistance: ≤4mΩ

• Cycle life: ≥80% capacity after 500 cycles at 40A discharge

• Rate performance: 40A/2A capacity ≥93%

• Max charge current: 12A

• Discharge temperature: -20°C to 80°C

• Size: Φ21.20±0.20mm × 70.50±0.20mm; weight: 67.0±2.0g

Ideal Applications

• Power tools and garden tools

• Cordless vacuum cleaners

• Drones and RC models

• E-bikes, e-scooters, and e-mobility packs

• Other 21700 high-drain battery packs

Why Buy From Us

• Large stock available for fast order fulfillment

• Competitive pricing for bulk orders

• Low internal resistance and stable high-rate output

• Long cycle life under high-current discharge

• 1-year warranty from shipment date for manufacturing defects

• Packing: 100 cells per box, 200 cells per carton

Get a Quote

Need a reliable 21700 high-drain cell supplier? Contact us for bulk pricing, samples, and current stock. Send your target quantity and application, and our sales team will reply with a quotation and lead time.

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🌐 Website: www.becellbattery.com