Rated at 2.1 amps, this charger has plenty of turbo power. A USB passthrough can be attached to the charger, then plugged into a wall outlet. Many people like to use their passthrough in the car or when working on a computer. Now, the passthrough can be used wherever a wall outlet is nearby. This USB charger creates endless new functions for the passthrough. The passthrough can now be used when watching TV or a movie, reading, or doing paper work. It can also be used to charge any USB-powered device such as a smart phone, tablet, PDA, or portable music player.