I use a Fenix bike flashlight mount AF02 and a Coleman 155 lumen compact flashlight with a Cree LED. It's kind of a utilitarian arrangement but it uses standard AAA batteries and with NiMH rechargeables I get about 3 hours run time on the high setting and probably twice that on low. There is plenty of light for general road and trail riding with a decent width and quality of beam. Another advantage is that it takes just a couple of twists to release the flashlight from the mount for use handheld for road side repairs, etc. I've used the light on plenty of rough roads and in the rain and it hasn't failed yet. It wouldn't take much to come up with a helmet mount for a small flashlight like this either.