Hi Mike, thanks for the insight, especially about the trailer potentially draining the car battery. I had not considered that, and a couple times I have not unhooked the trailer from truck if we’re only staying a night or two.

Thanks again. The table is working great for us.

Mark, the power converter has primary two jobs. 1) supply 12VDC to the trailer wiring while the trailer power cord is plugged in, and 2) recharging (without overcharging) the trailer battery.

Note also that if your truck is still connected to the trailer, its battery gets charged also.

Also, remember that if you are parked (say overnight) with the trailer plugged into the truck without the trailer being plugged in to 110VAC, the truck battery can be run down along with the trailer battery. It’s a good idea to unplug the trailer from the truck in this situation if you want the truck to start the next day. Don’t forget to replug the next morning or you won’t have trailer brakes.