Pardon my ignorance. I thought its was an e car as well. For sure it is a gasser.
I have a twelve foot extension attached to a timer set for four hours. I usually set them up on the far end of the picnic table. Four hours has been enough to fully charge both batteries so far (we have two bikes). Our batteries are detachable so they are stored in the back of the Jeep when not in use. I won't have them in the coach. If the Jeep burns it isn't that big of a deal. Perhaps I'm just being paranoid but one hears these horror stories.
Darrell
you should invest in a lipo charging/storage bag/box
there are a lot out there, find one that fits your batteries. safest way to store them.