21700 3.7V 4000mAh High-Discharge 30A Lithium-Ion Battery Cell

21700 3.7V 4000mAh High-Discharge (30A) Lithium Battery

Modern 21700 form factor cell providing massive power output without thermal runaway. Capable of continuous 30A sustained discharge for cordless power tools and high-torque electric bikes.

Specifications

• Dimensions: 21 mm diameter × 70 mm length
• Nominal Voltage: 3.7V (Full charge: 4.2V)
• Rated Capacity: 4000 mAh
• Max Continuous Discharge: 30 Amperes continuous (Peak 40A)
• Chemistry: INR / NMC high-drain