Meet the Pyle Pedal Power (PBDNC10): a handy charger that lets you generate energy for your smartphone as you ride your bike. It has a USB port you can connect your gadgets to recharge them. To get started, you simply have to mount the dynamo to your bicycle wheel. There is a rechargeable battery that stores energy for your gadgets.
The Pedal Power charger can be attached or removed quickly. It will charge iPhone, Android, and other comparable gadgets. Sets you back under $40 at this time.