My experience charging at home, different rigs with different chargers, is to fully charge the batteries, then disconnect them. Even with multi-stage chargers, the batteries can get damaged from over-charging. A trickle charger might be the exception.
If parked outdoors in sub-freezing temperatures over the winter, I advise to store fully charged batteries in your warm house. If that is not an option, then I would leave the batteries mounted in the RV but disconnected. Then go out with a charger every other month and charge them to full again. You will know if that is a waste of time if they are already at full when recharging.
If you are of the mindset that you need to run your motor home engine and generator every few weeks, then do nothing else because running them for an hour every-other week maintains the batteries.
Remember to be watchful of the acid levels if charging often.
If I lived in Palmdale CA, I would charge, disconnect and forget for two months, and not worry about running engines during storage time.
Every time I left my rigs plugged in and left forgotten for a season, nothing but bad things happened to the batteries. Trying to maintain my batteries, I end up damaging them. I figure batteries sitting on store shelves are left alone for many months. I can do the same at home.