How To Make Cycle Light Without Battery. Additionally the external battery pack is inconvenient and the lights often dont have a quick-release in a useful position for removing the light when you leave your bike outside somewhere. Basically a battery eliminator is simply a large capacitor placed in the circuit where the battery was.
Im assuming its running off the battery. Battery powered bike lights be they the conventional type or newer rechargeable lights are generally made so that they can be easily removed from your bike without requiring tools. Tape the paper over your batteries with the light at one end and the end of the longer wire and exposed side of the battery on the other.
I have a usblithium front light but im still using a 2xAAA rear light with rechargeables.
The light itself attaches to either the front fork or rear seat stay using a locking cable mechanism. They wont make a huge difference but they will make the bike lighter. Then you attach a magnet to one of your spokes as you would for a cadence sensor. This will cause your light.
