I got tired of all the “weak sauce” bicycle lights, so I cobbled up something more serious.

The light is an Abrams Class 3 LED. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

It is powered by a 12v Makita tool battery installed into a Makita flashlight I modified to use as a power source. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1



The light offers multiple flashing modes and colors. I’m in the process of putting one together with a white flashing LED for the front. The batteries last 4+ hours (haven’t drained one yet on a ride).