Ars Technica posted a story that the OS X 10.8.1 update fix the battery problems of Mountain Lion
The upcoming point update to OS X Mountain Lion, 10.8.1, may improve battery life on Apple's notebooks, according to at least one developer with access to the developer seed. Softpedia quoted the unnamed developer, who argued that the fixes coming in 10.8.1 not only "resolve all the reported battery drainage issues" that came with the release of 10.8, but that the improvement in battery life is "quite substantial."Developer release of OS X 10.8.1 said to improve battery life
Not long after Mountain Lion's release in late July, user reports began cropping up suggesting that the OS update was draining their MacBook Pro and MacBook Air batteries faster than Lion (10.7). Our own tests showed that this indeed seemed to be the case—while we were regularly able to see 8+ hours of life during regular use on a Retina MacBook Pro under Lion, we were unsuccessful at achieving much more than 5 hours performing the same activities under Mountain Lion.
