socom1970
Flashlight Enthusiast
I know the SF L4 Lumamax builds up a lot of heat when on. I know that means the heat sinking is working properly when that happens. My question is: Can I run my L4 for long periods of time with it's extreme heat build-up without damaging the LED or shortening it's lifespan?(I would be holding it to add to it's heat-sinking.)