Zoom™ Energy Square
2,000 mAh Li-Polymer battery device compatible with iPhone, Android OS Smartphones, Blackberry and other USB devices that connect with one of the adapting tips included. Easily check the battery life by shaking the Zoom Energy Square and the indicator lights will tell you how much power is left. Takes 6 hours to fully charge the Zoom Energy Square and will give an iPhone 1-1/3 charges when an iPhone's battery is fully drained. Our batteries have undergone evaluation for numerous quality standards..