3. Electrical Characteristics & Test Condition
Testing Conditions: Ambient Temperature: 25±5ºC; Huminity: 45%~75%.
NO.
Items
Capacity
1
-20°C
Condition
Criterion
Rest for 1 hour after fully charged, then discharge
with 0.33C current until the battery reaches the
discharge cutoff voltage. Repeat above process for
three times, if the discharge time is not less than 180
minutes, you can stop and define the Discharging
current*time value (Ah) as battery capacity.
≥125Ah
Discharge
Temperature
Characteristics
At 25±5°C discharge the battery with the current of
0.33C to the cut-off voltage. Store the battery at
various temperatures for 2h and discharge the
battery with 0.33C to the cut-off voltage. Record the
ratio between discharging & charging capacity.
0°C
25°C
55°C
≥70%
≥80%
100%
≥95%
Charge the battery to full capacity and store it for 28
days, and then discharge it with 0.33C to the cut-off
voltage.
Charge Retention
ability
Remain capacity
≥90%
Charge / CC (0.33C)/CV (14.6V);
End current: 0.05C;
Rest time: 1h;
Discharge / CC (0.5C);
End voltage: 8.0V;
Repeat above process until discharge capacity is no
more than 80% of normal value. Accumulated times
is defined as cycle life.
2
Cycle life (DOD%100)
≥2500 cycles
3
4
UE-12Li125BL
03
