After OS X Mountain Lion reportedly killed battery life for some notebook users, help is in sight. According to the Mac Observer, the upgrade to OS X Mountain Lion dropped battery life by up to 33 percent for certain users, and while OS X 10.8.1 helped a bit, users still had shorter battery life over 10.7.4.
OS X 10.8.2, on the other hand, has finally brought OS X Mountain Lion up to snuff with OS X Lion’s and even OS X Snow Leopard’s battery life. On the Mac Observer’s test machine (2011 MacBook Pro, 2.0GHz i7), OS X 10.8.2 gave them around 380 minutes of power while the original build of OS X Mountain Lion only gave them 260. If you’d like to view more detailed comparisons, check out the Mac Observer‘s graph, which we’ve posted below.
This gets me pretty excited for OS X 10.8.2 as my 2010 MacBook Air took a pretty big battery life hit when OS X Mountain Lion was released. And to be completely honest, OS X 10.8.1 didn’t help my Mac’s battery life at all. Let’s hope 10.8.2 fixes this issue once and for all. Since OS X 10.8.2 is pretty deep into the testing phase, we should see it hit System Update sooner rather than later.
Source: The Mac Observer