Quote Originally Posted by surfer5 View Post
Just out of curiosity, why not? I wasn't planning to anyway but I'm just wondering the reasoning.
If you look down the battery tube from the tailcap (the only way you can since the heads are polymer welded on these models), you'll see the operating circuit board for the light. The batteries rest directly on it. Repeated pounding on the bottom of the board will damage it. Weapon lights, and handhelds more suitable to be mounted will have their batteries isolated from direct contact with the electronics by a bulkhead of sorts, and separate contact, or even a spring.