A circuit for a bicycle light that is charged by a Micro USB. 

I have very little idea about how electronics actually works together, so I'm essentially throwing components on a breadboard at this point. 

The project is a bicycle light with a simple "on" and "off" function. 

The battery is a 3.7 Volt 1 S Lipo. 
The brightness is maintained until the very end the battery charge... and a red LED turns on when there is only 1 third of the charge remaining.