I have a new 2021 Travato. Had it since Late 2020. Not yet used. Start engine 10-15 minutes every week! Plug in shore line once a month. Start generator 45 min - 1 hr once a month.
Yet, my chassis battery dead today. Thanks to the boost in the Travato I was able to start the van.
I had the same problem (dying chassis battery) in my previous Airstream 190b van.

Question: is this a common problem with Class B’s?
What is causing this? What options do I have...