If you have experienced battery issues after upgrading to Apple's newest Mountain Lion OS, you are probably not the only one as the problem as occurred on a mass scale. However, things can only get better from this point round as Apple's newest update - 10.8.1 - has shown a significant amount of battery improvement.
Folks at Ars Technica tested the update first hand on a MacBook Air and a retina MacBook Pro, and found that the update improved their battery life by nearly two hours.
Although Apple's release notes for the OS X 10.8.1 update stated nothing about the widely reported issues with laptop battery life under the initial shipping version of Mountain Lion, the tests proved that it actually sustains a bit of your battery, which is a major improvement from the initial build - 10.8.0 (but nothing compared to OS X 10.7.4).
"We immediately began putting those claims to the test after downloading and installing 10.8.1 on Thursday. Indeed, the battery indicator on both my 2010 11" MacBook Air and the 15" Retina MacBook Pro test unit began reporting significantly improved life compared to 10.8.0," stated the ArsTechnica report.
The report further averred that "My MacBook Air typically reports between 4.5 and 5 hours on a full charge, while after installing Mountain Lion it would only show about 3.5 hours. After installing the update, it began reporting 4.5 hours consistently. Still, my MacBook Air has seen over two years of constant charge and discharge cycles, and its battery isn't in new condition. I also didn't have any recent runtime tests for comparison."
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