Originally Posted by 86Jag
....but then had the charge drained by the fridge while driving about 3 hours? I am charging now at home, then will try the fridge on battery a few hours to see if the batteries hold a charge longer..
If you are running a fridge on 12v alone that will drain a battery pretty quickly.
Also, the 12v feed from the vehicle probably doesn’t have a large enough wire to keep up.
A battery that requires that much water to be added may be toast.