Sony 5,000 mAh Power Bank, Black (Pack of 2) Never be caught without power to charge your mobile device or digital camera 5,000 mAh Li-ion Polymer rechargeable battery provides superior performance and guards against leakage Pre charged and ready to use out of the packaging No change wait time Easy charge from your PC with supplied cable or from AC adapter (not included) Compact design for easy transport and charging while on the go