When the lights go out or a long travel day stretches on, the difference between a minor inconvenience and a genuine problem ...

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 ...

Say buh-bye to dead devices.

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 ...

Jason Chun is a CNET writer covering a range of topics in tech, home, wellness, finance and streaming services. He is passionate about language and technology, and has been an avid writer/reader of ...

Experts advise partial charging, avoid heat and overnight plug-ins to preserve battery life.