We have a 2001 RoadTrek 200P on a Chevy chassis. I have searched all through the RoadTrek literature and cannot find any answers to my question. I found (pretty sure)that when I plug in to 120v, the house battery is recharging, but does the chassis(engine starting) battery recharge too? Or do I need to use a separate charger for it. I was thinking of disconnecting the battery cables from the chassis battery, connecting my DVM to the cables, plugging 120v back in and see if I get 12.8v at the cables. Any thought or knowledge would be greatly appreciated. Moonmanvt