The Retina MacBook Pro has a claimed of 7 hours battery life. Somehow the unit that we have does not last more than 4 hours of usage. Thinking that it might be hardware issues (faulty battery, etc), we tried several method to fix it but none of the method work.
Today we came across a website that provided a simple command that can fix the issue. According to a user on Apple’s Support Communities forum, your MacBook Pro’s battery life could be dramatically reduced by a corrupt file created by Migration Assistant. The only way to improve it is to remove that file.
Simply follow the steps below:
- Open up Terminal on your Mac and type “ cd ~/Library/Preferences/” (without the quote marks) and hit return.
- Now enter “rm com.apple.desktop.plist” and hit enter again.
- Finally, enter “killall Dock”
You desktop will now refresh — possibly changing your wallpaper Mac to Lion’s default backdrop — and the corrupt file will be removed. If this is indeed the cause of your battery woes, you should not find that your battery life now increases significantly.
Please share with us if you found out that your Retina Display MacBook Pro’s battery life has improved significantly after performing the above command in Terminal.
Apple has released a firmware update for your Retina Macbook Pro, so please launch your App Store and look for the update under “Updates” section.