An not official Samsung Galaxy S II I9100 accessory that fits to your Samsung Galaxy S II and provides additional power.
Essentially an extended battery, this power pack for the Samsung Galaxy S II has a 2200mAh capacity. Add this to the 1650mAh standard battery in the device already that gives 3850mAh.
This power pack fits around your I9100 and extends the talktime. It does make the device physically thicker, but it also acts as a protective casing.
The phone can be used without restriction but adds the extra power too, so you can work away from a fixed power source for longer - perfect for the most demanding of users.
Key Features of Samsung Galaxy S II I9100 Power Pack (Extended Battery)
Rechargable battery with 2200mAh capacty
Fits around the Galaxy S II as a protective case and power pack
Not Samsung official accessory
Technical Specification of Samsung Galaxy S II I9100 Power Pack (Extended Battery)
Input / Output - 5V 470mA/ 5V 600mA
LED - Battery Status
Capacity 0 ~ 5 % : LED Blinking.
Capacity 5 ~ 20 % : RED.
Capacity 20 ~ 80 % : GREEN.
Capacity 80 ~ 100 % : BLUE
Extended time - Talk time: 14h(2G) / 7h(3G)