I was under the impression when on shore power and battery charger on, house battery would stay charged? I left my live well on overnight and came out to find it all shut down. Shore current was fine - house battery dead. I did not have other engine batteries on. Shore power switch was on, battery charger showed green and on, and voltage/current good w no faults. What am I missing? Is there an other breaker or something that prevents deck lights, and others items from running from shore power w house battery engaged?