External battery for  iphone 4G -1800mAh
(with roof cover)
THINNEST-1.5cm
(With Capacity Indicator & USB interface)
Capacity:1800mAh
Battery typ:Polymer Lithium-ion battery
Output voltage:DC5V
Output current:500mA
Input voltage:5V
Input current:500mA
Charging time:4-6hours
Cycle life:＞500times
Using Temperature:-10℃~ +40℃
Storage Temperature:-20℃~ +50℃
Color:gloss back,matt black
Remark:gloss items sprayed UV glossy oil(protecting scratched);matt items sprayed rubber oil(protecting slip)
Dimesion: 128*62.8*15.5mm
Weight:60g