I noted at the end of the last season that my service batteries were not really holding their charge. At night particularly, since the solar panels were not producing any electricity. From Cherbourg, we mainly sailed at night, and every time, after a few hours at night, I was getting an alarm indicating that the voltage of the batteries was getting too low.
If I ignored the alarm, after another half-an-hour, the whole system would collapse, to the extent that I had even difficulties to start the engine! Not to mention that when starting the engine, I had another alarm for a too high voltage. So what was going on?
