In this work, we propose an electromagnetic energy harvester and energy storage system for bike lighting applications. On the basis of an energy harvester technique, an electromagnetic mechanism appliance will be designed to drive light-emitting diodes (LED). The circuit framework which comprises an electromagnetic energy harvester, an energy storage capacitor, a boost controller and lighting LEDs, is a kind of wireless sensors network (WSN). This novel design has the following features: (1) the LED is driven via an electromagnetic mechanism without the need for an external power source and battery, (2) an ultracapacitor is used as an energy storage device to deposit induction energy when the bicycle is moving and (3) power is uninterruptible by supplying electric energy accumulated on the ultracapacitor to the LED when bicycle is stopped. In order to verify the feasibility of the proposed bike lighting applications, a prototype electromagnetic energy harvester with the electronic circuit is installed and tested in a bicycle. The experimental results validate satisfactory performance. The LEDs is effectively lit either the bicycle is moving or at rest.