I apologize. My commentary skills are lacking. I'm using a Macbook Pro Retina 15" that I bought in August 2013. For the first few weeks my battery life was fine (around 6 hours), but after a few updates I started to notice a serious drain. The worst was when my battery lasted only about 2 hours, and that's when the computer was on, the wireless was turned off, and the monitor was turned down all the way. It was annoying to say the least.
Even after trying all the standard tricks (turning off the bluetooth and wireless connections, turning off the keyboard lighting, seriously dimming the screen, it was still terrible. But here's whats ended up working for me.
The procedure:
- In this procedure, leave out all quote marks “ “
- Open Terminal (by going to the Applications folder and from there the Utilities folder and from there opening Terminal).
- On the keyboard type “cd ~/Library/Preferences/” and hit Enter.
- Now type “rm com.apple.desktop.plist” and hit Enter again.
Finally, type “killall Dock” and hit Enter
It took me a few tries to get the file to delete because a few times my computer said there was no such file, but I just rebooted the computer and it finally worked. I didn't notice a change the first charge or two after I deleted the file, but a few days later it really started to kick in. Where before I could only spend two hours without wireless on my BRAND NEW Macbook Pro, now I'm running around six hours with wireless on and moderate activity (word processing, simple internet browsing).