The 2200 mAh rechargeable lithium ion Grade A battery is enough to charge smartphones, MP3 players and more. This reusable power bank is an upgrade to the Bolt with the addition of the carabineer providing a great convenience factor. Reusable power bank charges via USB cable (included) which can recharge the battery backup or be used to charge up devices with a micro-USB input like Android smartphones from Samsung®, Motorola®, HTC®, Nokia®, and others. Input 5V/800mA. Output 5V/1000mA. Media device not included.