... % after 3 month.3.High security:protection for overcharge,overdischarge,overload,and short circuit.How to ... that means the powerbank can work now.Connect USB cable to the powerbank.Choose correct mobile ... ipad,PSP,NDSL,MP3,MP4 ...After charging,press the button for 3 seconds to turn off the powerbank ... take screen mobile power supply . 16000mAh 5V 1.2A 2*USB universal mobile power for iphone/mobile phone