... switch 1,product series: 3in1 power case for iphone 4/4S,battery case for iphone ,speaker for iphone,3d case for iphone2,Features: (1)3in1 power case for iphone 4/4S: ... means product power is 100%4,Battery cells type (1), polymer lithium-ion batteries, standard voltage 3.7 V (2) the capacity ... ) the input current: more than 500 mA (0.5 A) (7) charging time: 3 ~ 5 hours (8)Working temperature: °C ...