Rant. Please Read. Whats the problem with my MacbookPro Retina???

Discussion in 'MacBook Pro' started by VideoNewbie, Sep 17, 2012.

  1. VideoNewbie macrumors 6502

    Joined:
    Feb 6, 2009
    #1
    about one hour ago my battery was at 90% with an estimated time of 5 hours and 45 minutes left of battery time.

    i just checked the battery now and its down to 55% thats almost 40% in just one hour. and strangely the estimated time has now dropped to 2 hours and 23 minutes of battery time left. (ony an hour has passed i should only be at 4 hours)

    why has my battery dropped down so significantly? anybody have any guesses as to whats going on here?

    my macbook pro is brand new
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    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. ECUpirate44 macrumors 603

    ECUpirate44

    Joined:
    Mar 22, 2010
    Location:
    NC
  4. Dark Void macrumors 68030

    Dark Void

    Joined:
    Jun 1, 2011
    Location:
    Cimmerian End
    #4
    What were you doing at the time? The estimate you saw beforehand was established based on the workload at the time.

    As an example, if your battery estimates that you will receive 5 hours of battery life, you cannot then open up a game and play for about 5 hours. It will be drastically different.
     
  5. VideoNewbie thread starter macrumors 6502

    Joined:
    Feb 6, 2009
    #5

    i had multiple windows open in firefox, skype , word & virtualbox running
    but all of this was going on even when i first received the time estimate..
     
  6. afinch1992 macrumors 6502

    afinch1992

    Joined:
    Sep 13, 2012
    Location:
    Dallas, Tx
    #6
    i would charge it overnight and see if the same thing happens tomorrow. if so, just take it in
     
  7. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #7
    The estimates aren't perfect. Read through the information that GGJstudios posted, that should give you a good idea of what is going on.

    When Apple quotes the 7~ hour battery life, they're doing a specific test. I doubt they're running Adobe Flash(which will drain your battery quickly), and I doubt they're running more than one browser window.
     
  8. VideoNewbie thread starter macrumors 6502

    Joined:
    Feb 6, 2009
    #8

    I checked the activity monitor and i see A LOT of things running that i dont recognize.

    things liek kerneleventagent,hidd, etc. etc.

    how do i know if its a rogue process?

    ----------



    i read through this entire thing and it basically talks about how to keep ur battery in good health. (unplug every few days) i dont seee where it says anything about why my battery is dropping so quickly
     
  9. bobcan macrumors 6502a

    bobcan

    Joined:
    Jan 8, 2007
    Location:
    Sunny but Cold.. Canada
    #9
    ** How long DID it Actually Last For..??

    Well.. I will approach this from a different perspective than I often see..

    ** How long DID it Actually Last For.. ?? **

    Or, did you even Run It Empty, or just post after seeing the 'estimated time by an electronic gas gauge' being presented to you.. ?? It seems that many folks panic if it changes erratically, which I almost certainly expect it will some times.. :eek:

    It has always been my experience that the TIME is relative, just like on a Vehicle.. The 'Gas in the Tank' and Distance to be Traveled will be dependent upon your Driving Type.. and often it WILL go further than stated..

    So I have seen.. Quite Often.. in both circumstances..

    :apple:

    "why has my battery dropped down so significantly? anybody have any guesses as to whats going on here?

    my macbook pro is brand new "
     
  10. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #10
    This is right near the top of the link GGJstudios posted:

    Like I pointed out, it's an estimate. Sometimes estimates are wrong. You're running quite a few things, so I'm not surprised your battery doesn't last as long as the estimate claims.
     
  11. AirThis macrumors 6502a

    Joined:
    Mar 6, 2012
    #11
    It's a known problem. Check out the explanantions in this thread:

    http://forums.macrumors.com/showthread.php?t=1437426
     
  12. Dark Void macrumors 68030

    Dark Void

    Joined:
    Jun 1, 2011
    Location:
    Cimmerian End
    #12
    There's your reason.
     
  13. sweetbrat macrumors 65816

    sweetbrat

    Joined:
    Jun 17, 2009
    Location:
    Redford, MI
    #13
    This wouldn't really be applicable to what the OP is talking about. His computer started with a certain time estimate, then drastically dropped. The article you linked to is about the generally lower battery life expectations in ML. Different subjects, though both have to do with batteries.

    OP, did you actually do a call in Skype while you were watching the battery estimate? Skype kicks in the discrete graphics card, which pulls a lot more battery power than the integrated one does. Usually just quitting Skype will see your battery estimate go up by quite a lot (on my 2011 MBP running Skype cuts my estimated battery time about in half). As others have said, it all depends on what you're running at the time. That battery estimate is just a snapshot, based on the current battery power your computer is using. Opening new windows, actively browsing, using Skype...all those things will cause your battery to drain faster than if it's just sitting there. Chances are there's not really anything wrong with your battery.
     
  14. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #14
    Re-read the 3rd bullet point in that section.
     

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