Hi. Just got our first van and we're not sure how the leisure battery works. This is what I think. 1. It is charged while the van is moving. 2. When we stop and park up we just connect any 12v item to the battery. 3. We can hook up and use both electricity and the battery at the same time. 4. If we park it up over winter does the battery discharge and will it work once we start using the van again. I know these points are very basic but what we can find on line goes into to many technical explanations. Many thanks to those of you who reply and help us out.