ordering a 20A/300W buck converter step-down unit. Hoping that unit is large enough I can just wire it in before my distribution fuse box and filter both the battery and converter for the entire camper (maxxfan, propane furnace, 3 LED lights, USB power outlet, and 12v/propane refrigerator). If not, I can use it for just the fan/light circuit and buy additional units for other circuits if needed, it was only $15.
on hold for well over an hour this morning with airxcel to see if they will warranty this (less than one year since purchase, just installed it a month or so ago). Had to drop off and opted for the callback feature on their phone system. I am wondering if they either have a very limited staff, or just so many issues their customer support department cannot keep up...