Also called power banks, portable chargers come in all shapes and are meant to charge all different sizes of device. Most of 'em will charge your phone, but the larger ones will revive your tablet, ...

If your singular concern is phone battery life and you want to spend as little money as possible, this $20 power bank is your ...

A solution? The Mophie Juice Pack Wireless delivers a full charge to your phone, keeping you away from power outlets for longer. In addition to extending the daily usage of your phone, this Mophie ...