VBpower Li-ion Battery Cell 21700 4000mAh 3.7V Flat Top


Model: VB-21700-4000mAh

Specification:

Typical Capacity:4030mAh @ 0.2C Discharge

Minimum capacity: 4000mAh @ 0.2C Discharge

Nominal voltage:3.7V

End-of-charge Voltage : 4.20V±0.05V

Standard Charge:CC/CV,0.2C5A, 4.20V

Standard Discharge:CC,0.2C5A, 3.00V

End-of-charge Current:0.02C5A (At CV mode)

End-of-discharge Voltage:3V

Charging Time: 8 hours

Max Discharge Current: 20000mA  (5.0C5 rate)

Weight: approx. 70±2g

Dimension: 21.3*70.5mm

Discharge at high temperature: After standard charging, rest the cells 4h at 60±2℃, then discharging at 1C to voltage 3.0V, recording the discharging time..

Discharge at low temperature: After standard charging, rest the cells for 16h at -20±2℃, then discharging at 0.2C to voltage 3.0V, recording the discharging time.

Period of Warranty:The period of warranty is one year from the date of shipment. guarantees to give a replacement in case of cells with defects proven due to manufacturing process instead of the customers abuse and misuse.

Production Country of Origin: China

Typical Capacity:4030mAh @ 0.2C Discharge

Minimum capacity: 4000mAh @ 0.2C Discharge

Nominal voltage:3.7V

End-of-charge Voltage : 4.20V±0.05V

Standard Charge:CC/CV,0.2C5A, 4.20V

Standard Discharge:CC,0.2C5A, 3.00V

End-of-charge Current:0.02C5A (At CV mode)

End-of-discharge Voltage:3V

Charging Time: 8 hours

Max Discharge Current: 20000mA  (5.0C5 rate)

Weight: approx. 70±2g

Dimension: 21.3*70.5mm

Discharge at high temperature: After standard charging, rest the cells 4h at 60±2℃, then discharging at 1C to voltage 3.0V, recording the discharging time..

Discharge at low temperature: After standard charging, rest the cells for 16h at -20±2℃, then discharging at 0.2C to voltage 3.0V, recording the discharging time.

Period of Warranty:The period of warranty is one year from the date of shipment. guarantees to give a replacement in case of cells with defects proven due to manufacturing process instead of the customers abuse and misuse.

Production Country of Origin: China