Note that I edited my previous response to be more precise - you might want to look at it again.
You normally have the battery switch off during storage to prevent battery discharge by the CO detector or anything you left on. Another time would be while doing minor, fuse-protected electrical work on the camper if you are not physically disconnecting the battery. When camping it’s on the whole time for me because I have a compressor fridge. This switch is also the first thing you go for if something is malfunctioning and you’re not sure what’s going on.
Edit: My battery itself has a shutoff switch and an SB175 connector (rather than terminals) that can’t be disconnected without moving the battery. So I use that battery switch as my method to disconnect the battery while doing electrical work. Unless you install a separate battery switch at the battery (like on a boat), I’d recommend disconnecting from the battery terminals when doing electrical work.
Edited by Jon R, 13 March 2023 - 10:49 PM.
Jon R
2021 Grandby Slide-in Front Dinette
2021 GMC 3500HD CC LB SRW Gas
1993 Chevrolet K2500 Ext Cab LB