Apple Insider posted a story that a number of MacBook Pro and MacBook Air owners who updated to the recently-released OS X Mountain Lion are complaining of battery performance issues
Since the first complaints surfaced in an Apple Support Communities thread started on July 25, the day Mountain Lion launched, the number of reportedly affected MacBook Pro and MacBook Air owners has grown to the point where Apple has supposedly initiated an investigation. As of this writing the thread, titled "Battery life dropped considerably on Mountain Lion" now stands at 15 pages.OS X Mountain Lion users reporting laptop battery life issues
While most users are seeing battery life drops of about one to two hours, some cases claim performance has fallen to less than 50 percent as their machines are only capable of staying on for a little over two hours.
