Install a "REAL" disconnect switch at the battery, it can be in the positive or the negative side, battery will last a very long time and still run slides in and out several times.
Mine is a rotary type mounted just above the battery on the back wall of the front cover.
Very similar to this one.
Disconnect Switch
Russ & Paula the Beagle Belle.
2016 Ram Laramie 3500 Aisin DRW 4X4 Long bed.
2005 Copper Canyon 293 FWSLS, 32' GVWR 12,360#
"Visit and Enjoy Oregon State Parks"