10.8.2 update: Did it proves your mac battery life?? Posted by ckhk212 on September 24, 2012 02:15 pm 2 I updated my early 2011 2.2Ghz Core i7 15" MBP to 10.8.2. However, I am still only getting 4-5 hours of battery life. Anyone else experiencing the same issue? There are 2 Comments. Load 'Em Up. Show speed reading tips and settings Shortcuts to mastering the comment thread. Use wisely. C - Next Comment X - Mark as Read R - Reply Z - Mark Read & Next Shift + C - Previous Shift + A - Mark All Read Comment Settings Live comment alert: Hide it! Comments for this post are closed.