Ideal location for a battery disconnect switch

My set up is the same as furpod's first 2 pictures (switch on the battery box).

Offgrid - (just for FYI/giggles) I have a starting battery in my 1963 Impala SS that is 17-18 years old! It still starts the car just fine. I can't remember if I bought it in 2000 or 2001. It came from AutoZone. I've never heard of any battery lasting that long.

Oh, BTW, I use my battery disconnect to disable the charging loop from convertor when running AC with my 2K genset. I know I can turn of convertor CB, but I'm already at front of trailer where genset is mounted. Know you are a quick start fan, no issues. I do what works for me.

Ok sure Mike, I can certainly see using it to create a condition to measure true open circuit battery voltage. I think < 200 ma with all loads off is close enough, but fine. I want my charger to see battery voltage during charge with as little series resistance as possible. That’s me.

My main concern here is to be sure no one thinks that leaving their batteries disconnected for any length of time is an ok thing to do. It’s not. And I suspect that is what most people are probably thinking to use battery disconnects for, but I may be wrong about that.

Just a comment which I’m sure will start a debate.

You should never leave lead acid batteries without a charge source for more than a week or so at the most. Plate sulfation will result. So if you can keep your rPod connected to ac then do that and let your charger do it’s thing. If you dont have access to ac power and the trailer is stored outdoors then install a solar charger. If you have no source of power where you store your trailer andno solar access then remove the battery(ies) and maintain their charge at home. Either way I just don’t get the benefit of a disconnect. I removed the one that I got with my trailer, which stays connected to ac all the time unless I’m using it.