Below is a screenshot from a SmartSolar MPPT 100/30 connected to a 4-cell Li-Ion battery. Apparently over the last few days between 22 and 52 W of power has gone in with maximum battery voltages of 14.11-14.2V each day.
Problem is there have been no panels connected, and no load on the battery either, for the last two weeks. i.e. it's just the MPPT controller, a BatteryProtect, and nothing else.
The voltage displayed as Battery min is the actual battery terminal voltage, the rest of the data is garbage. What's up?
Or have Victron embedded a perpetual motion / free energy machine inside every MPPT controller? :-)