Reload this Page 2014 15" rMBP - Battery Performance

Discussion in 'MacBook Pro' started by Liberty., Aug 24, 2014.

  1. Liberty. macrumors 6502

    Sep 13, 2008
    I'm not quite satisfied with my new rMBP battery. I often have situations like 84% charge and 4-5h remaining. And I don't really do much. Just Safari browsing with Flash blocked, some Word-processing, flux and Dropbox running. Brightness at 50%.

    Other people say their rMBP 15" devices are running like 8-10 hours.
  2. TechGod macrumors 68040


    Feb 25, 2014
    New Zealand
    Probably the dGPU is deciding to crash your party.
  3. Liberty., Aug 24, 2014
    Last edited: Aug 24, 2014

    Liberty. thread starter macrumors 6502

    Sep 13, 2008
    I don't have a dGPU.
  4. Liberty., Aug 25, 2014
    Last edited: Aug 25, 2014

    Liberty. thread starter macrumors 6502

    Sep 13, 2008
    Might anyone please reply?

    Here's a CoconutBattery screenshot I made yesterday, my device is 13 days old.


    From today:
    Current charge 70%, 3,5 hours remaining.
  5. bhayes444 macrumors 6502a

    Jul 13, 2013
    The only thing that's odd to me is that the battery has 633 mAh more capacity than it was designed for. Your battery problems could stem from a whole slew of other things. Spotlight indexing, backups, program syncing, or some rogue process could be the cause of the 'reduced' battery life. I will defer to those that are more knowledgeable in the ways of Mac OS X to be able to diagnose any of those issues; or to at least help you in diagnosis.
  6. gim macrumors 6502


    Jul 27, 2014
    The calculation of the remaining time on a charge is not accurate, thats it.
    There is no problem with your battery unless you really just get 3.5 hours in the end with 70% remaining under light load.

    My 15" rMBP is also just 2 weeks old. When I started it earlier, it was right at 70% (what a coincidence :D) and showed only 4.5 hours remaining for a while. The remaining time went up slowly after that, and now at 60% it's at 6:49 hours.

    So don't worry...

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