One of the great performing IMREN 21700 size batteries, the Green 4000mAh is a great cell which offers excellent overall power, while providing a large 4000mAh of capacity. Product Description: Style: Flat Top Chemistry: IMR Size: 21700 Nominal capacity: 4000mAh (Max) Max Continuous Rated Discharge: 35A Dimensions: 70.80 mm (Max) x 21.80 mm (Max) Weight: 70.00g (Approx.) Discharge Cut-off Voltage: 2.50V Nominal voltage: 3.60-3.70V Full Charge Voltage: 4.2V +/- 0.05V Protected: No, Unprotected Standard Charge: Constant Current 2000mA, Constant Voltage 4.2V Operational Charging Temperature Range: 0 to 50 degrees Celsius Operational Discharging Temperature Range: -10 to 70 degrees Celsius What you will get: 2x IMREN IMR 21700 Green Series 4000mAh Rechargeable Flat Top High Drain Batteries 1x IMREN Brand Plastic Storage Box Can Store 1 to 2 Batteries

Note: We have tested random samples from each and every shipment to make sure all the batteries are fresh and genuine. You won't get this extra service from most suppliers.