After equalizing charge, for batteries with voltage lower than 2.18V/cell, we should make the
battery discharged in 0.1C
10
A for 4-6 hours, and then charge the battery with constant voltage
of 2.35V / cell and limited current of 0.15C
10
A.
Recharge
Recharge the battery immediately after discharge according to the below method:
Charge the battery with constant current of no more than 0.2C
10
(A), until the battery voltage rises
to 2.33~2.37V/cell, then change to constant voltage charge of 2.33~2.37V/cell until the charge
completed. Any of the following two items can be regarded as the fully charged symbol.
Refer to the required time as table 3-3.
In constant voltage case, the charge current keep unchanged for 3 hours in the final stage of
charge.
Charge voltage shall be adjusted according to the ambient temperature, temperature
compensation coefficient is
±
3.5mV/
℃
/ cell.
Table 3-3 Required charge time in different depth of discharge
Depth of
discharge (%)
Charge current of
constant current
charge(A)
Time for changing constant
current charge to constant
voltage charge(h)
Charge voltage of
constant voltage
charge(V)
Charge time(h)
20
0.1C
10
1.6
2.35
8
0.15C
10
1.2
2.35
6
50
0.1C
10
4.3
2.35
14
0.15C
10
3.3
2.35
12
80
0.1C
10
6.8
2.35
16
0.15C
10
5.5
2.35
14
100
0.1C
10
8.7
2.35
18
0.15C
10
6.8
2.35
16
Operation and
mainten
ance
17