When we had our 50 qt ARB plugged into the inverter in back of our 2017 4Runner, it would shut off after a while. Kinda like a rear window defroster. Yes, there is 12v cig/style plug right next to it but the connection just did not seem tight enough. Eventually, I will do a hardwired ARB set up with the screw in plug. But for now, I bought a dedicated battery & made my own portable set up. Totally separate from vehicle.