Commissioning
Manual_Grid_Power_FNC_en_V3_0
34
9.1.
Charging Procedures for the Initial Commissioning
9.1.1.
Charging with Constant Current
It is highly recommended to charge the HOPPECKE grid|power FNC
®
cells during initial
commissioning with a constant current for a defined period of time.
The diagram below exemplarily shows the charge voltage of one cell depending on time
during charge with constant current I
5
for 7.5 hours:
Note
Voltages up to 1.9 V per cell can occur during the initial charging with constant current.
If your battery charger cannot achieve this performance for the complete battery system, the
system has to be split into two or more groups. Charge the groups separately.
Note
If you decrease the constant current, the charging time is increased.
Example:
I5 = 7.5 hours
I10 = 15 hours
I20 = 30 hours
…
Charging voltage [V]
Charging time [h]
