Hi APG,
Not knowing the context of your question, I'll add some to this
On the battery, I thought you had a 2006 model, is that correct? If so there is a battery disconnect switch on the A frame header behind the battery. If you are storing the camper and not plugged into 120 VAC shore line power, you should turn the battery off. The LP detector is wired live and will drain your battery over a few weeks. And then there are other things that get left on, like the TV antenna power boaster that uses power. That you can turn off, if you remember.
As to the LP, if you are not using the camper because it is stored or you are towing it and not using the LP, turning it off adds a level of safety and knowing the tank will be at the level you left it at. From my experiences on failed RV LP gas components, I turn the LP off when not not camping in the camper. Gas components for inside your home or industrial, not a problem leaving them on, but they also do not tow down the road like an RV does and they cost more which in this case, equates to higher quality.
Hope this helps
John