When my coach is in storage for the winter, I have to disconnect house battery cables. I remove the inverter positive cable and then the house positive cable. Naturally, this happens after I turn off the inside power switch. I use the chassis disconnect switch by the engine to disconnect the chassis batteries.
I run the generator 2 hours once a month, which is cummins current recommendation.
In the summer, I use an upgraded solar panel to charge all batteries. I added a 100w flex panel and a cheap 10amp solar controller. I added extra wires that connect the chassis batteries to the house batteries. It's crude, but works.
2006 Newmar Essex 4502
2015 Jeep Grand Cherokee