Tow vehicle is a 2016 Ford F-450 with Dual Alternators. HOWEVER, unless I misunderstand the way things function, the truck's alternators will only output charge voltage commensurate with the state of charge on the truck's two batteries. So, if those batteries show a reasonably full state of charge, the truck will only output just over 13v, not nearly the level that would induce a heavier charge to the coach.
Now, that said, if this group thinks that between the 'light' charge the truck would give and the two stock batteries I'd be ok for 24 hours or so, then perhaps I'll leave it at just the two for now. More opinions welcome.
Sent from my iPad using Tapatalk