High capacity lipo battery 805080 4000mAh customed lithium battery

Charge voltage

4.2V

Nominal voltage

3.7V

Nominal capacity

4000mAh     0.2C Discharge

Charge current

Standard Charging:0.5C

Rapid charge:     1.0C

Standard

Charging method

0.5C CC(constant current)charge to 4.2V, then CV(constant voltage 4.2V)charge till charge current decline to ≤0.05C

Charging time

Standard Charging:2.75hours(Ref.)

Rapid charge:     2hours(Ref.)

Max.charge current

1.0C

Max.discharge current

1.0C

Discharge cut-off voltage

2.5V0.25V(0.2C)

Operating temperature

Charging:  0 °C ~45 °C

Discharging:0 °C ~45 °C

Storage temperature

-10°C~ +45 °C

 Dimension

Length: 80≤±0.5mm (not including tabs)

Width:  50≤±0.5

thickness:8.0≤±0.2mm

Drop Test

The cell is to be dropped from a height of meter twice onto concrete ground. No fire, no leakage

cycle time

≥800times

As of shipment

3.6V~3.9V

Weight

Approx67.9g

Temperature

Characteristics

1. According to item 4.1.1, at 23±5℃.

2. Capacity comparison at each temperature, measured with constant discharge current 0.2C with 2.75V cut-off.Percentage as an index of the capacity compared with 100% at 23℃

Criteria:-20℃: ≥65%

23℃: 100%

80℃: ≥95%

Standard Charge

Charging the cell initially with constant current at 0.5C and then with constant voltage at 4.2V till charge current declines to 0.05C