1)Great capacity of 4000mAh,4-7 times then the mobile battery. 2)USB connector input and output reach 5V, available for 4-6V recharge products. 3)Outlet rise voltage circuit, output can reach 7.4V, available for 7-9V recharge products/ 4)Various of DC connect way and connectors, can charge power for mobile, MP3, MP4, PDA, digital camera, digital devices 5)Touch control switch, can test the available power so that can well arrange the power supply 6)Intelligent protect IC: Over charge protect, over discharge protect, over download protect, short circuit protect. Battery Type: Lithium-Ion battery Size: 107X57X16mm Weight: 130g Color: silver, black, white Rated input: 8.4V 1000mA Rated output: USB-5V 1500mA DC-8.4V 1500mA Battery Capacity: 14.8WH Working Temperature: -10 -40 Standard setup: 2PCs of connected line, a set of connector, 1PCs of charger, protect bag 1PCs separately. Chosen fittings: PDA Connect line and other connector Charging time: around 3-4 hours Idle Discharge: Less than 100uA