Affordable and portable, the mophie power boost battery charges your devices without draining your wallet. The compact battery offers 5,200mAh of power for up to 19 additional hours of power*. Charge your phone while out with friends or charge your headphones while at the gym so you can keep the music going. The power boost portable battery goes with you for when you need it most. Plus, every battery is triple tested for peak performance and safety. Charge multiple devices at once with the two USB-A ports. The 5,200mAh portable battery provides up to 19 hours of power* for when your need most. The portable power boost easily fits in your bag for a quick charge on-the-go. The integrated four-light LED power indicator displays charging status and the current battery life.