I'm not sure if this has been covered before... I have a Makita ML902 9.6v stick flashlight. It is very bright, probably equivalent to 15 - 20 watts of halogen output (I also have a 15 watt NiteRider but the battery won't take a charge; it's every bit as bright as the NiteRider). It runs about 2 hrs. off one battery, but I have 4 batteries = 8 hrs run time!

I need a light to use while I send my NiteRider in for repair. So tonight, using a hose clamp, I attached it to the finger of my front reflector bracket. I angled this a little, laying the flashlight down on top of the stem (the top of the light is approx. 3/4" up off the stem, the bottom of the light rests on the stem). I used a velcro strap to strap the bottom of the light to the stem.

I took it on a short 8 mile loop to test it out. It was flawless. I now have a very bright bicycle light with plenty of run time. I'm not sure how much the light/battery/charger would cost separately. I got it, a drill, two NiMH batteries, and the charger 4 or 5 years ago for $75.