I had bought that mount and had intended on Richelsons installing it when I had some work done on my old Kryptons. He turned me on to the strap mount instead for the very reason you describe, chairlift bumping the battery off. The strap mount is on the side, so it avoids that issue. Unlike the flimsy mount that came with the product that just loops over the strap, this one you have to thread the strap through. Haven't had a battery fall off yet.
