Originally Posted by blw2
some rigs are set up to charge the house system when the chassis engine is running
but are not set up to charge the chassis battery when the chassis engine is shut down and the house is plugged into shore power.
This is how mine was from the factory
When plugged into shore power, it only charged the house batteries
I added a trik l start system to charge the chassis battery from shore power
Ditto, Ditto. I inadvertantly discharged the chassis battery by keeping a Roav Viva (Alexa on the road) plugged into the dash 12v outlet over a long period of time whilst in storage and on shore power. Unfortunately, the Aux start system has never worked but, fortunately, Thor had the foresight to place a 12v outlet and a 110v outlet next to each other just to the rear of the passenger seat. So I mounted a permanently connected Battery Tender to the adjacent wall which backfeeds through the 12v outlet.