Winten 10000 mAh WT-P100N-BK Portable Battery Pack, External Battery Pack, High Capacity Power Bank Charger, Dual USB output (5V/ 2Ah & 1Ah) - includes 7 connectors 10000mAh (at the internal battery cell voltage: 3,7V) Li-Polymer battery, 2 USB output, 5V/ 2 Ah and 5V/ 1 Ah, with the battery charge/capacity level LED indicator Includes 7 connectors High security through over voltage protection, overload protection and short circuit protection Long service life and sustaining capacity through rechargeable Li-Polymer battery Improved self-discharge: After 3 years of non-use is still 75% remaining capacity