2022 Micro Minnie Parasitic Load?

[OlafTheNork]

I have a 2024 Winnebago Micro Minnie 2100BH w/Xantrex 3000 inverter and 2, 280aH LiFePO4 lithium batteries. During pickup dealer walkthrough, tech told me that with inverter off with no shore power, the smoke/CO2 detector still draws from the battery(s). She said best idea is to put in a "battery isolator" switch between the inverter and the batteries to prevent the parasitic draw, or at least that source anyway. So I installed the isolator switch as described. Hopefully this prevents ALL parasitic draw. I'm still too new an owner to tell.

 

[Morich]

Some things have no one truly good solution!
While the idea of totally cutting off the power drains is good for some issues, like reduced drain, it can also come with a downside as it does increase a bit of risk.
One might ask why Winnebago doesn't include this battery cutoff as a standard issue?
All they would have to do is run the safety items that are left powered over to the other side of the cutoff and then ALL power could be removed with the battery cutoff switch!

Why not? Because they would then be prone to big lawsuits if there was some failure like a person accidentally leaving one of the stove burners turned slightly on.
Say a new person is looking at the RV and turns the knob to see what it does? Maybe they only leave it on without the burner lighting?
Maybe it sets all night with the propane filling the RV and then the next morning, you go out and there are no big loud alarms so you walk in and flip a light switch?
You see where this goes BOOM?

So when they tell you to change a design, take a few minutes to consider as you are then assuming that risk! Personally, I do not favor having one of my employees tell folks to increase the odds of killing somebody!
Alarms ARE a pain but nothing like dying as that really gets awkward!
I favor making sure the propane tank is turned off at the tank if I am disconnecting the safety equipment!
How about the CO detector? Battery powered or from the RV? Do you have automatic steps that you want to come out to avoid falling out?
Several things to consider before turning off the safety items they leave on!

 

[Old Navy]

If it wasn't going to get some kind of charge while stored, from shore or solar, I'd probably do the same. The installation instructions on the ubiquitous Safe-T-Alert propane/CO detector reads:

Connect to wiring or circuit that CANNOT be turned off by a switch or ground fault protector. Only use Conforms to UL or recognized permanent wire connectors. It is acceptable to connect the 35 Series CO / LP gas alarm to the main disconnect. The alarm will be off along with all other 12-volt equipment when the main disconnect is turned to the off position. The RV must not be occupied when the main disconnect is in the off position.

By "main disconnect", they mean the battery disconnect switch. You should not add an additional switch to shut off the propane/CO/smoke detectors. If the battery disconnect is off, the propane should also be shut off, which I assume it would be for storage.