I cut down to make it shorter and plan to use external battery. I don't like heavy light on bike handle bar.
This is my first step mod on this light.
This is my second mod on this light. I made it shorter.
On handle bar
Factory spec said it should use only 1 pieces of li ion 3.7-4.2 V only. But after I test with 4xNiMH 4.8-6V. It was found that current draw about 2.3-2.5 A and produce much more light out put than one li ion cell.
The battery pack is not finish yet.