Winten 6600mAh WT-P66N-BK Portable Battery Pack, External Battery Pack, High Capacity Power Bank Charger, Dual USB output (5V/ 2Ah & 1Ah) - includes 7 connectors with LED torch function 6600mAh (at the internal battery cell voltage: 3,7V), 2 USB output, 5V/2 Ah and 5V/1 Ah, with the battery charge/capacity level LED indicator Includes 7 connectors , with additional LED torch function High security through over voltage protection, overload protection and short circuit protection Long service life and sustaining capacity through rechargeable Li-Ion battery Improved self-discharge: After 3 years of non-use is still 75% remaining capacity