SAN FRANCISCO -- During an emergency, it's important to keep your cellphone handy and charged. In the event the power goes out, it's going to be even more difficult to find a place to plug back in and ...

At some point, we have all anxiously watched our phone battery hover around the danger zone of 5% or less. Phones are lifelines, and when your device is dying, every percentage counts. Maybe you need ...

Your Android smartphone could have the largest battery available and support fast charging speeds, but neither will matter if ...