[tomd]

my opinion,
My Keystone Sprinter, like Just Beclause said, has a disconnect which does NOT disconnect the slide outs, leveler, or remote control items. I researched and decided that is good for me, I usually turn switch off but can still open slide and inspect now and then in storage.
The issue is of course, not everything is off, and I accidently left the patio light on (which remote turns on separate from the manual switch). Also, if you do any electrical work, disconnect is a must.

Safest isolation method is to disconnect the battery on the (-) negative terminal. Either remove cable or install a second switch. I recommend doing this for long storage periods (over month). Not much draw down in short time but you will need to charge up about every 6 weeks or so.