I have a question about your battery compartment upgrade (nice job by the way). I see in picture, 100_0438.jpg
that you have what looks like a vent tube going out the top of the box. If that is a vent tube, where does it exhaust? Did you make an opening in the side of your camper?
I'd love to do something like this to my battery compartment but I'm not sure what I'd do with the vent tube. From what I've read, the vent tube *must* exit through the top (since the hydrogen gas rises). My battery "compartment" is steel support brackets that holds the battery tray and hangs from the RV accessed by a door.