I am seeing this same problem myself. Last time I tried to go out, I unplugged the charger at about 6:00 PM and when I got to the lake at 6:30 AM, there wasnt enough juice to start the big engine.Can anyone tell me exactly why this is not a flaw in the system? I have been through two cranking batteries in less than a year. When the main switch is off and the starter key is off and the alarm is off and the bilge pumps are not set on auto and all of the hatches are closed, the boat should *not* be drawing any current from the cranking battery.I would like to hear an official response form BassCat on this.Thanks,Dennis