An absolutely perfect way to provide power to your latest Raspberry Pi Board creating a truly portable invention! Powered by 4 X AA batteries (rechargeable or Alkaline), our battery pack can provide 10-15Wh of power (depending on the type of batteries used) which can power your Raspberry Pi device for anywhere from 3 to 10 hours of operation. Operation is simple. Simply insert a fresh set of batteries into the battery pack, toggle the on/off switch and connect your Raspberry Pi Board. Instantly the device will be powered and running. Backed by our Gomadic Lifetime Warranty and over 10 years of innovation in charging accessories, we think you will find this to be a really great product for your Pi!