No.

Items

Specification description

3.1

Appearance

The surface is clear and is free of scratch, mechanical cuts and match well with the host.

Charge voltage

Nominal voltage

3.4

Cut-off voltage

10.0V

Nominal Capacity

4.20Ah(at 0.2C rate discharge after standard charge)

Minimum capacity

3.7

Standard Charge

Step 1:0.2C CC charge to 16.6V;

Step 2: CV (constant voltage 16.6V) charge till charge current decline to 0.02C.

Temperature:0~45℃ 

Max. continue charge current

3.9

Max. continue discharge current

5.0A

3.10

Operating temperature

Charging: 0°C ~ 45°C

Discharging: -20°C ~55°C

3.11

Regular Storage

6 months: 0~25°C Humidity:45%~90% RH 6 个月: 0~25°C

The battery should cycle once in three month. Recommended storage temperature is 25±5°C of SOC 50%~60%.

3.12

Cycle Life

≥800cycles, more than 80% at 0.3C charge and 0.3C discharge at 25℃(Charge method :0.3C CC charge to 16.6V, then CV 16.6V charge till charge current decline to≤0.02C; Discharge: Constant current 0.3C 10.0V Cut-off)

3.13

Pack Initial Internal Impedance

≤130mΩ (50% SOC, Measure the AC impedance at 1kHz)

3.14

Battery pack weight

Approx 0.750kg