Developer Confirms OS X 10.8.1 Update Significantly Improves MacBook Battery Life

When Apple released OS X 10.8 (Mountain Lion) back in July, one of the few things users complained about was its impact on MacBook battery life. The software seemingly contains a frustrating bug that causes some of Apple’s notebooks to lose around 38% of their normal charge.

Apple has been working on a fix that will be distributed with the OS X 10.8.1 update. And according to one registered developer who’s currently testing the beta, it significantly improves battery life by adding up to four hours.

“Until I installed 10.8.1, my MacBook was showing 4h:05m after a full charge,” he told Softpedia, referring to the amount of time his MacBook had before the battery needed charging again. “After installing 10.8.1 it’s showing over 8h,” he said. “I’m now able to use my Mac throughout the day again without having to carry my charger.”