kamperdog wrote:
So my battery is dead again. Unplugged to the shore power to see if the battery was ok after the winter and within and hour and a half it was down to 1/3.
The battery was on converter and shore power through the winter and went dead? Then you didn't keep it charged in winter. Probably didn't fully charge in summer when in use, either.
For winter: replace converter or get a proper standalone battery maintainer. Disconnect ALL the loads - pull the fuses if you have to. Keep it from freezing.
For summer: charge it properly every time and keep watered. If you are on grid all the time, then again replace the converter.