I have the 6 point hydraulic level up system that needs above 12.2 volts in the batteries to operate properly. That's not a problem when camping and plug into power but in storage it seems to drop down just under where the level up will work properly. I can hook the 5er via the cable to the truck and charge in about 30 minutes to hour enough to operate the level up's pump.
Has anyone put jumper cables between the truck and camper batteries and don't have to wait for it to charge up and able to operate level up system? My truck has dual batteries and I'm sure enough power to run the jacks.
I use to have a portable jumper box that had its own battery that would jump a car I wonder if those have enough power to use in emergency?
I going to isolate the battery using a battery cut off since the one on board by the water hookups still allow certain items to operate even if turned off. I have two red cables off my positive post one goes to the inverter with battery cut off switch and one goes to some sort relay who knows were from there. Think about cut off in the second positive line.
I have the worst luck with batteries, I going to look for storage area that has electric hookups...