While you are riding into work on your daily bike commute, why not charge your phone? There’s a bit more to it than that, but ultimately that is exactly what the Siva Cycle Atom does. A brilliant idea.
The Atom is a generator, complete with a detachable battery, that is fixed to the rear of your bicycle. As you pedal away, the generator is charging the attached battery. However it can also directly charge your phone too, using a smart switching system that goes back and forth between the device and the battery.
For example, if your phone is hooked up to the device it will directly charge your phone while you are pedaling, however when you come to a stop, your phone will automatically draw from the battery to keep you topped off.
Once you reach your destination, you simply detach the 1300mAh battery and take it with you for extra juice for your smartphone.