I finished the battery charger install yesterday. The Genius charger is for the the Full Rivers and the Battery Tender is for the Interstates which came with the coach. I had to make a couple adapter plates to mount the Genius to the unistrut as the mounting holes didn't line up with the center of the unistrut. I made the adapter plates from bar stock aluminum and the hardware is all stainless steel. As soon as I get the enclosure for the selector switch I'll get that installed.
The engines alternator charges the batteries while driving. When parked and plugged into shore power the CONverter will charge the batteries. The inverter converts 12v DC to 120 volts AC.