13'' Haswell macbook pro battery

Discussion in 'MacBook Pro' started by taq93, Nov 4, 2013.

  1. taq93 macrumors newbie

    Joined:
    Nov 4, 2013
    #1
    Hi, so i just got my 13'' macbook pro 2.4ghz 256gb 8gb ram and to my dissapointment the battery indicator for this guy only shows about 6 hours of battery life after a full charge.
    now, when theres 74% left, battery indicator is showing 4:30 left.
    Apple promised 9 hours and i was hoping to get at least 7-8 hours of battery.
    I'm only doing stuff on pages and some web browsing...shouldnt i get that amt of battery life at least? My screen brightness is 5 bars.
    Hoping someone would give an answer to this. thanks a lot!!!
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    The "time remaining" indication is an ever-changing estimate, based on the current workload of your system. It will fluctuate up and down from minute to minute as your power demands change. It is not perfectly accurate, but only an estimate. The only meaningful measurement is how long you can run on battery from a full charge to shut down while running your normal workload.

    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.
     
  3. OSMac macrumors 65816

    Joined:
    Jun 14, 2010
    #4
    Same model showed over 14 hours out of the box with less than a full charge remaining.... Yours sounds low?
     
  4. chakdey macrumors regular

    Joined:
    Aug 9, 2008
    #5
    There was article on MR not to long ago about how to improve your battery life for MacBooks, anyone have the link for that? I cant find it any where. :confused:
     
  5. AndyK macrumors 65816

    AndyK

    Joined:
    Jan 10, 2008
  6. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the Read post #2 and the link.
    The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.
     
  7. DaRealElvis macrumors member

    Joined:
    Feb 24, 2011
    #8
    I had the same problem! I called the hotline and they told me to press "alt" + "shift" + "power button" while laptop is shut down. Since than it shows me 10 hours when 100% charged. I still get like 6 hours out of it with normal use (just chrome and word) and I need to crank up the brightness. With normal sunlight in the train, etc. I see nothing with lower brightness settings. I am a bit underwhelmed, but I was told that 6 hours with normal use and almost full brightness is normal.
     
  8. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #9
    That's not the proper way to reset the SMC.

     

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