My Tailgate Inverter Setup powering my trailer

Yeah that is what I thought. I have dual battery capability so will add the deep cycle to the truck. Would only be running max two hours before using the vehicle again to go out and do whatever we do.

As I said above the inverter tends to alarm when the water pump or furnace goes on. Only 2 six volts so want the AC separate. No room for mor batteries on the trailer tongue.