I was thinking about the converter too. Is it possible that you are not overloading the generator but are pushing it for four hours a day and that might be creating the extra heat causing the failures? I know our converter pulls enough power that the Champ has a hard time running the AC at the same time. If the battery is low I have to wait till it come up some and the draw drops. With the converter off the AC starts up like on shore power even at 9-10,000 ft
Possibly a stand alone charger that takes less power would be better.
