Check out BattPi - BattPi is a Case for Raspberry Pi with integrated Battery and Real Time Clock. Built in UPS offering up to 8 hours of battery life.
1. http://www.crowdcrux.com/esington-glass ... qus_thread
2. kickstarter - https://www.kickstarter.com/projects/71 ... attery-and
Twitter - https://twitter.com/shahiddarbar
Thanks,
Shahid Darbar