wa8yxm wrote:
The convrter is suspect.. Make and model please.
Thought I posted this already.....????
How the converter was USED is suspect.
Most inexpensive units are not intended to be left on all the time and are not "smart" and will just blindly keep charging away whether it's needed or not.
It's fairly common knowledge that long term use of a dumb trickle charger is not good. When the battery gets fully charged, even a small charging current will "boil" off the water over time (a very slow electrolysis actually).
And I agree that leaving the fridge on is just a waste of energy.
It probably didn't make any difference in what happened to the batteries.