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 8 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.

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