Originally Posted by Wilber
I was clear until your last sentence. What constitutes "not using the trailer"?
Hi Wilber, sorry to get back with you late.
What I meant by "not using the trailer" is that the purpose of a battery disconnect is mainly to protect the batteries from over-discharging when the trailer is not in use (e.g., storing for long periods without shore power).
In your case, your RV is always "in use" or you always have shore power. No need to disconnect them if you have power running through the converter/charger.
The only exception I could imagine is if house batteries in a coach need to be disconnected while on the road or something like that, but I doubt seriously that is the case.