deep cycle

Went out on my boat this weekend for the first time -- a Hunter 27. At the dock before leaving, I hooked the battery (12V deep cycle) up to the charger. When I started charging it it read 35% and then pretty quickly got up to 45% but then stopped. I left it connected while we got the boat...

We currently have 2 new group 27 batteries, with a new 50w solar panel. We have a great (new) refrigerator that does not eat too much power at all, and the solar panel which is able to get both batteries to 13.7-13.9 in a few hours. We do not travel that much when not plugged-in, but do have a...