BikeCharge Dynamo - add dynamo without a new hub

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.

Features: Fits any spoked wheel. Charges any USB powered device. All-in-one design with bike light and power generator integrated in a stylish body. 3W 5.0V DC output. Fully charges most mobile phones with 2-3 hours’ ride. 20% lighter than similar system driven by hub dynamo. Low load resistance. Zero resistance possible if not in use (by disengaging clutch). Starts to work at 5 kmh. Full capacity at 20 kmh (based on 26” wheels). Easy DIY installation. Tool-free for Quick Release wheels. 1W front LED with integrated lens optics. 2 S/B LED rear light. With 700mAh Li-ion battery for keeping lights on for 2 hrs after stop riding. Beam angle adjustable. Remote-controlled lighting switch. Weatherproof [BikeCharge website]