... Treatment by paint rubber, Cell Type is lithium battery,Capacity is 1900mAh.feature:1.Power Switch: ... Iphone4 on Charge:First of all,pls turn on the switch,When lithium battery is full ... lithium battery is dead,pls insert USB cable into it,connect other port with computer USB port.Now it is able to charge ... lithium batter,after it is full of power,pls operate as above mention.specificaton:Output V: DC ...