Usually the only time I plug into the dock is when cruising and we want hot water and or AC. I will put my battery charger on as well but this is usually only for a day or two. There is a 100W solar panel in our system with a 4D lead acid house battery.
This summer I am going to pre-stage the boat before our cruise and leave it for a week. It will be at a dock so I would like to be plugged in with the refrigeration running and battery charger on in addition to the solar panel. The solar by itself can not manage the refrigeration 24/7 more like 24/3-4. My question is...will leaving the charger on with the refrigeration running and solar input be an issue for the battery? Will it harm the battery? Charger is a ProMariner ProSport20.