New Macbook Pro Battery issue

Discussion in 'MacBook Pro' started by thenewguy, Aug 18, 2012.

  1. thenewguy macrumors regular

    Joined:
    Oct 25, 2006
    #1
    I just got a rMBP and I have a battery problem.

    I'm currently at 91% battery and the indicator is saying I have 3:33 remaining - though it has been fluctuating between 2:54 and 3:46 or so.

    Shouldn't I have 7 + hours or so? I'm on the intel graphics chip and I have very few programs running.

    What am I missing?
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    What is your brightness set at (F1 and F2 keys)?
    Open Activity Monitor and select All Processes and then sort by CPU to show you the process(es) eating up your battery charge.


    ______________________________________________________
    This should answer most, if not all, of your battery questions:
    Apple Notebook Battery FAQ by GGJstudios
    The F.A.Q. includes the following topics:
    • BATTERY INFORMATION
    • BATTERY LIFE FROM A CHARGE
    • AC POWER
    • CALIBRATION
    • BATTERY LIFESPAN
    • CHECKING STATUS AND HEALTH
    • CHARGING
    • WHAT IS A CYCLE?
    • BATTERIES ARE NOT COVERED
    • BULGING OR SWELLING BATTERY


    ______________________________________________________
     
  3. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    From the BATTERY LIFE FROM A CHARGE section of the following link:
    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.

    This should answer most, if not all, of your battery/charging questions:
     
  4. Puevlo macrumors 6502a

    Joined:
    Oct 21, 2011
    #4
    If Apple says it should last 7 hours then that's how long it should last. Otherwise it's broken.
     
  5. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #5
    Err... no.
     
  6. jasonx2 macrumors member

    Joined:
    Apr 10, 2012
    Location:
    The United Kingdom
    #6
    You are wrong. I bet you don't have a rmbp on hand.
     
  7. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    That is false. Apple's 7 hours are based on very specific conditions that may or may not apply to the average user. As Apple states:
    From: Apple - MacBook Pro with Retina display - Technical Specifications

    They also state:
    From: Apple - MacBook Pro with Retina display - Design
    From: Apple - Batteries
     
  8. bobr1952 macrumors 68020

    bobr1952

    Joined:
    Jan 21, 2008
    Location:
    Melbourne, FL
    #8
    Did you forget this <sarcasm></sarcasm> maybe? :D
     
  9. Engali macrumors member

    Joined:
    Jul 7, 2012
    #9
    I had this problem, both before and after ML. Apple geniuses epically failed on helping me with this and other problems.

    What helped was resetting PRAM, again both before and after ML. My battery life shot up from 3-4 hours on a full charge to 7-8. Look it up on the interwebz. Do keep in mind, as another poster already mentioned, that the advertised battery life is under very specific conditions. For example, Anandtech made a distinction between light and moderate web browsing at 50% brightness, which amounted to bringing up a new website on average 15 seconds faster IIRC for the latter. This small change, over the course of hours, will have a significant effect on battery life. I roll with like four squares of briughtness usually. Also, expect to get less battery life in Windows 7 under bootcamp because, according to another thread, Windows 7 will always and only use the dedicated Nvidia GPU and doesn't do dynamic switching.

    Speaking of which, look up this app called gfxcardstatus or something. It'll put an icon on your menu bar that shows you, by showing an "i" for integrated or a "d" for dedicated, which GPU you're currently using. I've heard Facebook surprisingly will kick in dedicated. You can use this app to force the rMBP to only use either GPU, allow dynamic switching, and even set up preferences for when you're on/off battery for power supply. I highly recommend it since GPU usage and the screen brightness is a fairly large energy sink.
     
  10. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #10
  11. Engali macrumors member

    Joined:
    Jul 7, 2012
    #11
    Orly? Because that's the only thing that helped that I tried. And it worked before I even tried resetting SMC, so I stopped there.

    Have you actually had this issue and have you actually tried setting PRAM? The armchair looks mighty comfy, but I prefer to stand.
     
  12. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #12
    First, it's not PRAM. On Power-PC Macs, it's PRAM. On Intel-based Macs, it's NVRAM. It also has nothing to do with "armchair". I've helped thousands of people with these issues over the years, so I do know what I'm talking about, not to mention the fact that Apple's documentation is very clear about what NVRAM affects and what it doesn't.
     
  13. Engali macrumors member

    Joined:
    Jul 7, 2012
    #13
    Fantastic. What you're suggesting did not work for me. The Apple Genius who then did the same thing for me, but moved the preference list to the desktop before doing so because he said it was safer, did not solve the issue by doing what you're suggesting. Only resetting the NVRAM helped solve the issue as far as I can tell.

    It's great that you have helped thousands of people with issues like these, but that what you suggested did not work for me. Don't take it personally; I read it somewhere else. I also got pro help through an Apple store and it simply didn't work. I am reporting what actually solved my problem and that may be useful to others. If it matters to you, I researched how to install the Nvidia graphics driver in Windows 7 under bootcamp--no amount of AppleCare telephone support or live Apple genius help could. For godsakes, the people in the Apple store and on the phone were barely one page ahead of me on how to deal with the rMBP and the guy was literally reading community support threads trying to solve my issue. He, admittedly, was working on the second rMBP ever when he was working with me. So perhaps there are things that people in the community can help each other with that even Apple geniuses, people employed by Apple and tasked to troubleshoot their products, don't know yet.
     
  14. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #14
    I completely understand what you're talking about. I've found that the few times I've talked to Geniuses or called AppleCare, I found I knew far more about the subject than they did. That's pretty much been true with any tech support I've dealt with, including Microsoft.
     
  15. cms2 macrumors 6502

    cms2

    Joined:
    Aug 4, 2007
    Location:
    Texas
    #15
    Thank you for posting this link. Seriously, I was very upset to notice that my battery health, with only 12 cycles and on a 10 day old rMBP had suddenly dropped to 99%. I was frantically searching the forums for assistance/information. I am relieved to see that it fluctuates. :)
     

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