we have two battery charger firetrol 200amp ,with two batteries groups
i.e 2 batteries''12v'' in group
we had changed one batteries in one group then the charger had charged the
two sets but alarm of charger malfunction had appeared in the charger and by reset we found one set which had no change in batteries have continuous charging and 29v and replaced charger card by new one without any response
many thanks for your cooperation.
best regards