A large number of Mac users are reporting that installing OS X 10.8 (Mountain Lion) is causing a major drop in battery life on MacBook Pros and Airs. Those users have been posting about battery ...

Many Mountain Lion users have been reporting that the operating system upgrade has lead to a noticeable drop in battery life on their MacBooks, and it now appears that Apple has been calling those ...

Earlier this month, we pointed to testing by Ars Technica showing that upgrading to OS X Mountain Lion on a test Retina MacBook Pro substantially degraded its battery life. The testing showed a 38 ...