... with button and 4 LED, Surface Treatment by paint rubber, Cell Type is lithium battery,Capacity is ... it out .5.How to Put Your Iphone4 on Charge:First of all,pls turn on the switch,When lithium ... of power,pls insert iphone4,then turn on the switch on back side,in that case it is ... hot when charging3.please keep surrounding well ventilated to ensure heat abstracted normally when charing ,otherwise,it ...