Smartphones have some pretty sweet capabilities, but a super-long battery life is elusive. Some people have turned to portable backup batteries to keep their phones juiced up, but you still have to ...

The mobile charging space isn’t exactly lacking in choices, but they all primarily work the same way: Charge up your mobile charger, plug in your smartphone when the battery gets low, rinse and repeat ...

If you shake it — hard, or for a very long time — the Ampy external battery pack can actually generate enough electricity to add a tiny bit of juice to your phone. You can also plug in a Micro-USB ...

While some people are vaguely aware that movement can be converted into electrical energy — think wrist watches or emergency crank flashlights — a new Kickstarter project has created a small, wearable ...