Description: This credit card sized battery backup will keep your mobile devices charged while keeping you fashionable. The 2,000 mAh Li-polymer Grade A slim internal battery has enough life to fully charge an iPhone. The 5V/1A USB output means that is charges at the same rate of most wall chargers. Includes a USB to Mirco USB connecting cable which can recharge the battery backup or be used to charge devises that require a Micro USB input like Samsung®, Android Smartphones, Motorola®, HTC®, Nokia®, and others. Our batteries have undergone evaluation for numerous quality standards.