If you want to charge your gadgets while you ride your bike, then the best way has been to think ahead and get the bike fitted with a dynamo hub when you buy it. Now, there's another option: a ...

There are a few ways to keep your phone juiced as you ride. Those with foresight will have specced a wheel with a dynamo hub and USB adapter. Those who live in sunnier climes might opt for a solar ...

Imagine this: you’re on your smartphone trying to break your high score on Temple Run 2, but as you play, you realize the battery is slowly draining. You decide to plug it in when you see that there’s ...