Cycling is very popular these days with cyclists using their bikes to get to work, for fitness and for leisure too. So being away from a mains power supply can be an issue. However, worry no more for this BikeCharge device fits to the bikes wheel and produces power through the dynamo inside; simply insert the power cable for a free charge up.
These are some of the details on this interesting cycle charging system;
BikeCharge is a new generation dynamo system that is powerful, efficient, compact, and easy to install. It produces 5V DC power that can be used to charge any USB powered device. It is universal and fits any spoked wheel.
Priced at $100 in the US and 64 in the UK