Product Description
Manual_Grid_Power_FNC_en_V3_0
21
It is necessary to switch from boost charge to float charge when battery temperature is
≥ +45 °C, to avoid damage to the battery. The hysteresis must be selected so that the
switch to boost charge is only possible when the temperature is ≤ +40 °C.
If the battery temperature
is ≥ 60 °C, the charging process must be switched off to
prevent damage from cells. The hysteresis must be chosen in a way that charging is only
switched on again when the temperature ≤ 55 °C.
5.5.
Battery Capacity
A battery's capacity is the amount of electric charge it can deliver at the rated voltage.
The capacity, that can be charged to and can be taken from a battery, depends on the
electrolyte temperature. This relationship is shown in the following illustration. It shows the
charge acceptance of FNC
®
cells (1: H type; 2: M and L types) charged with I
5
as a function
of the electrolyte temperature:
A test of the battery's capacity is part of the reconditioning, refer to
page 48.
Capacity [%]
Electrolyte temperature [°C]
2
1
