2022 Salem destination rv has no 12v batteries

This like the 2nd time I've seen "Destination RV"

IS that like a park model. NO fresh tank. No waste tank Designed to be put on a site and left there? If so then it's designed to always be plugged in and from a "House" standpoint needs not have a battery.

Now from a Towing standpoint... Depending on the weight it may not need aux brakes (Trailer brakes) or it might have a surge brake system that also does not need electrical power... IF it has electric brakes.. then it needs an emergency brake battery.. but only if it has electric brakes.

Are you sure you have an inverter and not a converter? sorry I read your post wrong. just ignore this post.

Please read my edited post.
This rv has no batteries just a converter.
Meant 12v not 23v. Typo

My RVs batteries are in parallel with the 12V converter.

I guess the first question would be: What items on the RV are 12v powered? Thermostats in a stick built house are run off a transformer, so they're not really 12v. Lights? Fridge? Water heater? If they are not 12v, then you'll have to have an INVERTER to change the battery power to 110v. And you'll have to have a CONVERTER to charge the battery(ies).