I've just bought my first sailboat, with a fancy bluethoot system for reading the stats of the battery and solarpanel.
But my question: The panel (BMV712) shows a battery percentage, and its dropping when there is laod on the batteries - still all good. But the percentage keep dropping even if I connect the shorepower and the batterycharger. This weekend I tried to watch it, and shut down all power when we left the boat for aproximately half an hour. During that time of the boat, the percetage raised from around 44/45% to 100%. The charger gives up to 30A, and the batteries are 2 x 100Ah, so it is not possible that the charger should be able to fill up the batteries so quickly...
What could be the problem?
