I have a 2006 340 Sundancer. The boat has a cockpit refrigerator and the cabin refrigerator. When I'm not running the gen the cabin unit starts to defrost and the dealer is telling me that the batteries can't handle both units without the gen, however, I have a friend that has 2003 340 and he does it all the time without issues. The boat has 4 group 27 batteries that are in good shape.....any ideas?
