Merry Christmas back at 'ya, Gene! Don't do this on one house batteryAlso, we do not boondock much, and there are some maintenance-free batteries that have as much amp-hour capacity as our current Walmart deep cycle house batt. When we need a new one, will look at a high amp-hour regular starting battery.
We still have the problem I presented a while back with a somewhat continuous connection between the house and chassis batteries, and may have had it for some time. Thus, the chassis battery receives a charge while plugged into shore, but after 5 years, the battery is still working (but it is aging a bit now).