We had already told about the new version of Apple operating system, Mountain Lion , a little over a week, and success was evident with over 3 million downloads in just 4 days. Unfortunately, we found some problems that would cause a significant reduction in battery life on MacBook Pro and MacBook Air by Mountain Lion OS.
Apple support forums are full of users that after installing Mountain Lion, they faced some problems like they were left with the battery halved compared to just a few days before, logically going to point the finger at the new version of the system operating.
Apple has just started contacting people who have this problem to try to resolve it as soon as possible, asking to be able to analyze the file system to try to understand what is causing this drastic drop in battery. Apple has not made any official statements about the problem, but it certainly is already working on an update to resolve the situation quickly. If you still need to upgrade your Mac, the advice we give is to not risk it and wait a few more days , so that Apple has time to discover the cause of the problem and fix it.
If any of you had upgrade you OS to Mountain Lion then let know us through your comments and we will just find some fix about this.