*Output DC 5V-0.5V
*compatible device: iphone 4G
* Do not arbitrarily dismantled battery,puncture or incinerate in a dry place
*The sleek power pack snaps inconspicusly onto the back of your iphone,adding only a few millimeters of thickness, but more than doubling the battery runtime.
*It prioritizes consumption,pulling power from the power pack first,maximizing the iphone's internal battery.
*When using our product charger iphone 4G,it would be batter not to play you iphone 4G.
*It can't charger you iphone 4G and our product at the same time.
This backup battery is very sleek, compact, stylish and light as compared to its counterparts available in the market. It is compatible with both iPhone 4 & 4S. There is a light at the bottom of the battery which becomes red while charging and turns into green when fully charged. There is also an on/off button at the bottom to make sure that it uses its stored energy only when you require it to be used. It would take about 3-4 hours to become fully charged but this can be ignored keeping in view the time taken by other batteries available in the market. On the contrary once fully charged it charges your iPhone very efficiently and quickly.