Item

Spec

Nominal Voltage

12.8V

Nominal Capacity

20Ah

Internal resistance

≤100mΩ

Relative humidity

≤93% RH

Overcharge Protection Voltage

4.0V±0.025V ( for random single cell)

Over discharge Protection Voltage

2.2V±0.025V ( for random single cell)

Discharge Cutoff Voltage

8.0V

Standard Charge Method

Constant 4A to 14.6V, then constant 14.6V with current taper to 0.2A

Max. Charge Current

20A

Max Continuous Discharge Current

30A

Peak Discharging Current

50A

Max Discharge Voltage

14.6V

Life Cycle

2000

Charge Temp.

0-45

Discharge Temp.

-20-55

                               one month

-20-55

Temp. Range           three months

-20-45

                               ten months

-20-25

Requirement of Voltage on Transportation

13.2V- 13.6V