2200 mAh rechargeable lithium ion Grade A battery is enough to charge smartphones, MP3 players and more. Reusable power bank charges via USB cable (included) which can be used to recharge the battery backup or to charge up devices with a Micro-USB input such as Android smartphones (Samsung®, Motorola®, HTC®, Nokia®, and others). The suction cups on the back of the item allows you to suction the power bank to your mobile device or any other nonporous surface. Input: 5V/500mA. Output: 5V/1000mA. Media device not included.