Adding more batteries
I'm fully in the grip of winter up here so contemplating spring projects. I have a truck camper with a battery box that only allows for 2 grp 27 batteries which I have installed now (2 x 12v) I ...
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You don't need a switch. Before you leave the campsite to go home, you disconnect the jumper cables.
After you get home, the camper is slid off the truck, the stands go under it, and the truck bed battery set goes into the garage to be recharged and then maintained on a Float there (with a battery charger for that) until the next camping trip.
Now you have your truck back for other jobs.
The camper battery set gets recharged in place and then left on the camper's converter to Float with shore power from the stick house.
After you get home, the camper is slid off the truck, the stands go under it, and the truck bed battery set goes into the garage to be recharged and then maintained on a Float there (with a battery charger for that) until the next camping trip.
Now you have your truck back for other jobs.
The camper battery set gets recharged in place and then left on the camper's converter to Float with shore power from the stick house.
