In our camper van we charge a 160Ah bank of two AGM batteries with an MPPT 100/30 (firmware 1.59) from three 100Wp panels connected in parallel. The base load is a constant 1A with practically no fluctuations.
We have a BMV on the batteries. Several times now I have measured wild charging current fluctuations at the end of the absorption phase. Here is today's example:
I am wondering whether that is a sign of overcharging. Any expert opinions?
