Cydekick charges anything with USB or Phones as you Pedal

The Cydekick creates energy via electromagnetic induction (you know, spinning magnets), which means no tire-rubbing. one portion of the device is fixed to the frame, the other to the rotor, and the spinning action of these opposing magnets creates energy.
A few major bike parts manufacturers, Shimano and SRAM among them, use this tech to make dynamo hubs, but using that kind of hub means buying a complete wheel or building a wheel especially for that hub. Dynamo hubs are definitely not after-market, pop-on-and-go solutions, while the Cydekick is just that, since it’s external to the hub. The nature of the design means those with disc brakes can’t mount the Cydekick on the rear wheel – it’ll be a front-wheel only venture, but it can go on either wheel for users who don’t have to worry about that.

The power is also used to run the high intensity front light and optional tail light, but since rechargeable lights are relatively easy to come by, the star is the USB charging system. With it you can plug in anything that takes USB output, including your phone, your camera, or your bike computer. It also has a battery pack that you can plug into the wall to charge if necessary (though that rather defeats the purpose).
The Cydekick comes in two packages at the moment; the Pro and the Mini. The Mini doesn’t come with the USB charging system, which makes me wonder how many hours it would take for the batteries in a standard high-intensity light to burn out, and how many times that would have to happen to break even on the cost of the Mini. That said, it’s impossible to quantify the environmental cost of how many batteries end up in landfills (along with their packaging and all associated waste).