yes the generator will charge the batteries just like you're plugged into shore power.
also running on 12v, propane/CO detector.
i disconnect my battery (by pulling an in-line fuse near the battery) when TT is sitting at home, but leave the battery on. I'll plug in overnight before going on a trip. For winter storage, I store the battery in the basement on a float charger/maintainer.
as for switching to 2 6V, I've considered it myself, but I figure I'll make that upgrade when my current battery dies. It'll depend how much you boondock. I would think with a generator and solar, you probably won't need to go nuts on batteries, as you can pretty easily recharge when needed.
