... technology and intelligent control circuit (charging control, charging protection, discharge protection, will protection, short circuit protection)2, strong compatibility, ... Input: 5 V 500 MABattery Life: the charge and discharge cycles quartile 500 timesWeight: 245 G Accessories:1 AC ... connectors (such as MP3, MP4, digital camera, etc) high eficiency 8000mAh polymer lithium -ion battery power supply