Battery Disconnect Confusion

Are you plugged in during storage?

The disconnect is probably just the house battery. Yes it is best to move the switch to off or storage when not in use and not plugged in.

Chassis battery to start the main engine remains connected and will run down same as any car. Although RV tend to have additional accessories that will run it down a bit faster.

If you are plugged in a great solution is the Trik-L-Start brand combiner that will connect the float charge from the house battery to the chassis battery and keep everything in good shape.

DesertHiker wrote:
Okay, so I went out on Monday to take off on my first trip in my (new to me) 2018 Leprechaun, and the engine battery was dead. Had to call for a jump start. So I learned if my coach is just sitting in the driveway, I should turn the battery disconnect to OFF. (Kinda backwards .. turning a disconnect to off?)

But what confuses me is what happens if I camp without hookups for 7 or 10 or 14 days, which I often do?! How do I keep the engine battery charged so I am not calling for emergency road service in the middle of the back-country?

No, I don't have a "battery boost" for the engine battery.

Thank you!!!!

The battery disconnect switch usually has nothing to do with the chassis battery. It's strictly to disconnect your coach battery or batteries for idle times to keep them from draining.
If you want to keep the engine battery from draining, too, you could install a blade disconnect at the negative - terminal under the hood, or a Triklstart battery maintainer, to charge the chassis battery via shore power or generator, when you're parked with hookups or running the generator. It steals some current from the coach batteries. Or you could use a regular battery charger/maintainer under the hood to keep the chassis battery charged when you're not using the RV.

See page 39 Generic owner's manual
You should have two battery systems. Coach which operates 12 volt items such as lights, water pump, refer (12 volt control, and furnace)
Another battery system operates the chassis.
The coach system is charged by converter while plugged into shore power or when the main chassis engine is running.
The chassis battery is in most cases charged by chassis engine. Parasitic loads can drain this battery. It needs a trickle charger to keep it up.
Many MHs are equipped with an "AUX" or "Battery Boost" start button to tie battery systems together so if chassis battery is dead you can jump start it with this switch.

Not sure but could there be a second battery that runs the camper