Maybe just this one sucked
I stopped by Performance Bike today, and they gladly exhanged my broken light for a new one. I did have the opportunity to use it as credit for an upgrade, but I kept the same one since the other lights, without getting into the stupid expensive range, are really pretty similar. This one’s waterproof and has five lights and four batteries, so if it can just stay on the bike I should be doing pretty well. The bike shop guy said that I was the first person to return such a light, so I’m hoping that I just happened to get a bad one with a gimp switch, causing me to push it off the mount when I last tried to turn it on. Either way I think I’ll be a little more careful with it, maybe taking advantage of the quick release and removing the light during the day.