Im useing a quad yellow Top optima set up but not for the a/c

its impossible to run a functioning motorhome a/c system off of 12 volts it’s run on 120 volt and an inverter would drain all 4 batteries realy quick

you need at least 3k watt generator to run the A/c I use a portable 3500 watt ggenerator that fits right inside the rear door and I just pull it out , put it outside and start it up. The ac only takes a few minutes to make it realy frigging cold inside , even when it’s over 100 outside!