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CHARGING STATUS CHECK
Checking voltage during rest
Open circuit voltage (OCV) varies according to ambient temperature and remaining capacity of the
battery. In general, open circuit voltage is determined by the specific gravity of the electrolyte. Open
circuit voltage is the voltage of an accumulator which is without external consumers (not under load).
The measurement of the open circuit voltage needs to be taken either 24 hours after a full charge, or at
least 10 minutes after discharge. This measurement allows an approximation of the residual capacity.
See bellow Unibat batteries data:
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
As mentionned, the voltage when the battery is rested gives an approximative idea of the remaining
capacity. It is a specific indication only given by Unibat batteries. Indeed, with other batteries, the fact
the voltage is higher does not guarantee a higher capacity. The only way to know the real capacity of
your battery is to charge it, then unload it, and to measure its restored capacity with a tester such as
EMROL ones.
24/46
0°C
10°C
13,01 V
12,96 V
12,89 V
12,84 V
12,74 V
12,69 V
12,60 V
12,56 V
12,48 V
12,44 V
12,33 V
12,29 V
12,21 V
12,17 V
12,06 V
12,02 V
11,94 V
11,90 V
11,81 V
11,76 V
www.uniteck.fr
25°C
30°C
12,90 V
12,88 V
12,78 V
12,76 V
12,63 V
12,61 V
12,50 V
12,48 V
12,37 V
12,35 V
12,23 V
12,21 V
12,10 V
12,08 V
11,96 V
11,94 V
11,83 V
11,81 V
11,70 V
11,68 V
40°C
12,84 V
12,72 V
12,57 V
12,44 V
12,31 V
12,17 V
12,04 V
11,90 V
11,77 V
11,64 V
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