Merkury Innovation Energy Pop--- 2200 mAh @ The STAR Products (Pink) Compact and portable power supply for use on the go. 2200 mAh battery capacity extends your device's battery life. Energy Pop charges in 3 hours and fully charges your device in 1-2 hours. Plug your charging cable into the USB port of the Energy Pop and charge until your device has the desired amount of battery life. The Energy Pop is rechargeable by plugging the provided micro USB cable into your existing wall charger or your computer's USB port.