I thought mine charged the chassis through the bird....
I guess I don't recall really looking at that all that closely though and maybe my memory is fuzzy...since I don't have power where I store it it's not so much an issue...
One of the first things I did was to install mechanical switches on both battery systems. I disconnect both any time it's parked more than a few hours and the fridge isn't on...
I would like it to charge while sitting at camp sites though. I'm gonna have to double check that on my next trip out.
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