[flybouy]

The time between your last 2 posts are typical of the time it takes for the fridge to cool down. These aren't household type appliances. That fridge is most likely ammonia gas hand requires heat to operate, either a propane flame or a 120 volt heater.
Just a future thought, don't pull your trailer without a battery. There is a safety device that is a cable that connects to your tow vehicle and runs to a pin in a box on the frame of the trailer. If your trailer disconnects from the tow vehicle the cable pulls the pin out and energizes the electric brakes. That box is connected to the battery.