A friend and I recently moved my battery. It was pretty simple but we did things a little different. We took a piece of flat 10 gauge steel, cut it 7 x 7.5 inches (it could probably have been an inch or two longer to assist in it acting as a fender but at 7.5 inches, it hangs down about as far as the stock air box did), drilled the mounting holes (we used the same bolts as BrokenFixed), heated it and bent it until the battery sat level, we then cut the excess tabs off the original tray and welded it to the bent plate. Some paint and that was that. One of the other things that we did differently is that we left the fuse box attached to the original tray. Personally I like Tommy's place for the fuse box better as my battery is slightly off set to the chain side of the bike in order to accommodate for the extra room the fuse box takes up.
I'm planning on taking pictures soon as we should be cutting the fender in the next couple days.
