Probably would not hurt the actual LED however may destroy the step up circuit.If you can get it apart you may change the resistor out to help but it is a pain to get this light apart.
I removed the optic in mine and shortened the light a little.Then replaced the optic with a cut down reflector.
It is now a lot better or at least more usable beam.The light is about3/4 of an inch shorter and has a beam similiar to my Ultra-G with a good spot and nice round corona.I like the light much better now but it was a pain to mod.