hackery21LIVE (USA) Mini USB Converter for iDevices So, if you ever run out of battery at your friend's house and their phone is powered by a mini-USB cable, you can use their cable to charge your phone and case at the same time. When the battery on your iDevice runs out, you turn the case on and it charges your iDevice from its backup battery. The case also serves the dual-purpose of providing protection against damage. Reward: a FREE product |