GreenWheel G3 / Wheel

The GreenWheel is an e-bike power module which integrates a 250W motor and a 36V 9Ah Lithium battery packed into one standalone unit. It was first prototyped and demonstrated by the MIT Smart Cities group in September 2008.
The GreenWheel is highly energy efficient, with a patented drive technology which minimizes the rotational mass with which the battery does not spin. This system weights 8 kg and provides 30Nm of torque. The battery will be fully charged in 90 min providing 55 km traveling range per charge. GreenWheel fits into any standard 135mm dropout and provides a wireless link with your Smartphone via Bluetooth.