Alpha Technologies AlphaCell OPzS - Manual (Page 25)

25 OPzS-BATTERY
During the equalizing charge, monitor the temperature of a pilot cell. It should not rise
above 45°C. If it does, the equalizing voltage should be lowered to 2.20 or 2.25 V
per cell until the cells cool down to a temperature of 30°C or lower. At this point, the
equalizing charge may be resumed.
11.4 Operating Temperature
Normal battery life may be expected only when batteries are operated under the following
temperature conditions 15 °C to 25 °C.
The room air circulation should be adequate to maintain all cells in the battery within 3 °C of
each other.
High temperature increases realized capacity but decreases life expectancy, while low
temperatures decrease capacity, but may not affect life expectancy.
11.0 Operation, continued
11.3 Equalizing Charge, continued
11.3.1 Equalizing Charge Method
Constant voltage charging is the method for giving an equalizing charge.
Determine the equalizing voltage based on the maximum voltage allowed by the
system equipment connected to the DC bus.
NOTE:
The voltage of a warm cell will be lower than the average. Its voltage can be corrected for temperature by
adding 0.005 V/°C that the cell temperature is above the average temperature of the other cells.