>>1548883I DIY'd a helmet mounted light with a 500lm 18650 led flashlight but usually keep it at 125lm mode or 75lm mode for battery life. I've gotten so used to it on my helmet after 2 years I didn't realize how much weight I added to my head so after my mounts failed and I felt how much lighter my helmet was without it, I decided to zip tie the flashlight to my rack instead.