If you have the typical fridge and running it off the batteries, you are eating your batteries. Especially while camped. My first suggestion is to switch to propane for the fridge.
Some of your needs and circumstance is unique to TCs, or I would move this and your other Thread to the
Tech Issues Forum. You should check it out. Most of the appliances are typical in most RV types. Sometimes they are unique doe to space available such as solar panels or generator storage.
If you want, I will move this Thread.
Wayne
Moderator