Kaufman Brothers analyst Shaw Wu said that the Research In Motion Limited (TSE:RIM) BlackBerry PlayBook is going to be delayed because of the poor battery life associated with the device. The Apple iPad has a 10 hour battery life and the Samsung Galaxy Tab has a 6 hour battery life. Because of this issue, we may not see the BlackBerry PlayBook until May 2011. Earlier RIM Co-CEO Jim Balsillie said that the PlayBook will be launching in Q1 2011 for a price under $500. [BoyGeniusReport]