Manual
Operation Manual for
ZeMa Single Cells
Prepared on: 23-11-2022
Prepared by: GBA
Released on: 04.01.2023
Released by: -
Revised on: -
Index: _-
Distributed to: customer (public)
Pages: 20/35
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Parameter
Measurement Measuring interval
Continuous charge voltage at
end terminals of the battery *
>U
Battery
On start-up,
then every 4 to 12 months
Continuous charging current *
<3 A
After full charge
every 6 to 18 months
Cell voltages*
>2 V
At commissioning,
then every 6 to 18 months
Battery temperature
°C
Once in the summer
and upon request *
* Conduct your electrical measurements, if the charge is in continuous charging /
constant voltage mode, provided the charge was not interrupted for a period of 9 hours.
Log it the battery temperature for better interpretation of your measured values.
Verify the charging voltage of the charger and convince yourself that the constant
charging voltage at the battery terminals corresponds with the recommended value.
(Please note that for this case the value depends on the current charge and temperature
conditions, and that the constant charging voltage is already pending.)
In case of deviation adjust
the charging scheme according the instructions of the
charger manufacturer.
Store the collected data related to the battery system and analyse them over the time of
operation. Significant deviations should be observed, for a structured approach please
use the “Decision tree for analysis of voltage deviations” in 16 (Decision tree)".
When interpreting the measured values for the cell voltages check that the correct
charging voltage of the cells at 20 ° C and under fully charged condition is in a tolerance
range of ± 0.3 V / per 2V cell. Lower values require attention especially if they tend to
continue to decay. This may indicate that there is an internal short circuit in one of the
cells. During the service life expect higher cell voltage values to decline.