15" rMBP Horrible Battery Life

Discussion in 'MacBook Pro' started by jeffmorr, Jan 13, 2013.

  1. jeffmorr macrumors member

    Jul 27, 2008
    Montreal, Quebec, Canada
    Hey everyone,

    I brought my MacBook Pro to Apple (for the second time, first to get a new screen), for them to replace the SSD, which had crashed. It could be a coincidence, but since then, my battery life has been horrible. On medium-high brightness, I get less than 3 hours of simple web browsing or typing on Word.

    Can anyone help me with this? I've noticed that the GPU has always been over 60 degrees (Celsius) and both fans running at about 3000 RPM. Battery health is 94% & 137 cycles.




    I just read on an Apple support forum that doing this could help.

    Open Terminal:
    Type the following, hit enter after each line:

    cd ~/Library/Preferences/
    rm com.apple.desktop.plist
    killall Dock

    Should it fix the issue, does anyone know?
  2. GGJstudios macrumors Westmere


    May 16, 2008
    There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the following link for details, including tips on how to maximize your battery life.

    The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.

    It won't hurt to try, but it will only help if that's the issue that's draining your battery, which may or may not be the case.
  3. KPOM macrumors G5

    Oct 23, 2010
  4. jeffmorr thread starter macrumors member

    Jul 27, 2008
    Montreal, Quebec, Canada
    How would I do that?
  5. Valkyre macrumors 6502

    Dec 8, 2012
    my battery life is pretty awesome to be honest. i got up to 7 and half hours of net browsing (including youtube watching) at half screen brightness.
  6. Feed Me macrumors 6502a

    Feed Me

    Jan 7, 2012
    Location Location
    If you've enough nous to check the fan RPM and temperatures, why not check your activity monitor to see what the runaway process is?
  7. thundersteele macrumors 68030

    Oct 19, 2011
    Since you got the SSD replaced, it is possible that spotlight is re-indexing the contents of your machine. This can take a while and causes increased power consumption. Just a thought.

    You should open activity monitor and check if there are processes that constantly use the CPU (10% or more). There is no magic in battery duration, if it runs down faster than expected, it is because something is using it.
  8. jeffmorr thread starter macrumors member

    Jul 27, 2008
    Montreal, Quebec, Canada
    Thanks for the replies. I have one process, named "bash" that's using approximately 12% of my CPU and another, notifyd, that is using about 9-10% CPU.

    Battery life was great until I brought it in to Apple. It's been at least a month since I got it back so it can't be Spotlight indexing my files anymore.
  9. dastinger macrumors 6502a


    Mar 18, 2012
    Sorry for hijacking the thread and if it's better to open a new one with this question just tell me, please.

    My question is simple, anyway. Is there any app that gives us the option to create different power profiles? For example, when I'm using battery power, I'd like OSX to automatically turn off the automatic brightness adjustment and put the level to a different one. This is only an example.. more options would obviously be welcome.


Share This Page