Portable solar panels and solar battery chargers are easy-to-use devices that provide backup power to anyone who happens to be away from a working power outlet, including hikers, car campers, and even ...

Need a power bank for your electronics? These devices receive high scores for charging speed and portability. These portable battery packs—which you recharge from a wall outlet—can revive dying phones ...

We’ve all been there: You’re still hours from home, but your phone’s battery is dropping into the single digits. Meanwhile, you need to text your friends that you’re running late... while using your ...