For anyone in need of extra power, the switchBACK surge
provides an innovative solution to the dreaded Â´low batteryÂ warning. Keep your iPhone 4 charged and protected with this combination backup battery and kickstand case. The integrated micro USB port even allows you to charge and sync your iPhone 4 while in use.
The internal lithium-ion battery offers up to 80% charge on a dead iPhone 4.
Additional time added to your iPhone 4
Standby: Up to 275 hours
Talk: Up to 6 hours on 3G/ up to 12 hours on 2G
Internet: Up to 5 hours on 3G/ up to 9 hours on Wi-Fi
Audio: Up to 36 ...Read More