Ok so, I want to take this thing apart to increase the wire size for a potential brighter light and to see how to chop it up for a helmet/remote battery setup. I can see threads inside the "cup" and It appears that it would unscrew from the battery housing. A 22mm wrench can hold the battery housing section and i've tried wrapping the cup with rubber and using channel locks and vise grips to unscrew it with no success. Any suggestions?