I know these things have a long life span but am I doing any harm by using my fenix cree's all the time? I have been playing with a lot and am wondering if the bulb will get dimmer over time? I tried a search but keep getting error messages.
Yes, nothing is forever. You probably won't notice the change unless you use it extensively and then, compare it to a new light. Look into the mirror--looks OK? Now, take a look at a photograph of yourself 10 years ago. Any change evident? Thought so!