My situation is a little different , I put in a residential refrigerator to replace my dual fuel unit and added a deep cycle battery and inverter to run the fridge while on the road. I ran the inverter 120v input to the refrigerator plug-in so all the inverter runs is the fridge. I added the battery in the rear with no connection to the house battery. while on the road with a already cold fridge, I have about 9 hours to either start my generator to charge the battery through the inverters built in charger or plugin at a park. It's worked fine so far.
