So Who has battery issues with ML on rMBP?!

Discussion in 'MacBook Pro' started by memko, Aug 24, 2012.

  1. memko macrumors member

    Oct 24, 2011
    "In light of our test results, it appears that the battery life issues associated with Mountain Lion are generally limited to traditional MacBooks. While we would have liked to have been able test 10.7.4 on the rMBP, Apple’s battery life estimates for the rMBP lead us to believe that there is no significant battery life issue for the rMBP on Mountain Lion. Customers interested in moving to a Retina Display Mac should therefore not be too concerned about degraded battery life."

    SO any objections to the above statement?
  2. AZREOSpecialist macrumors 68020


    Mar 15, 2009
    My battery life is exactly the same under 10.8.1 on my rMBP. I don't see any difference at all.
  3. memko thread starter macrumors member

    Oct 24, 2011
    So no battery issues at all . It's very nice to know that rMBP survived the battery problem in ML :)
  4. playsontheleft macrumors regular

    Jul 2, 2012
    My battery life is unchanged from 10.8.0, under which it satisfied me completely.
  5. memko, Aug 24, 2012
    Last edited: Aug 24, 2012

    memko thread starter macrumors member

    Oct 24, 2011
    could you please give numbers under lion ,ML 1.8 and ML 1.8.1?
  6. playsontheleft macrumors regular

    Jul 2, 2012
    It depends on what I'm doing. Under actual work usage I tend to run it while charging and when I'm not, it fluctuates too much to really say. But for light use such as browsing the internet with Safari and listening to music with earphones, between 9 and 10 hours is very normal for me - capable of pushing 11, even, when I'm not listening to music. That said, though, I can tolerate having the screen at a very low brightness. Was I to raise it to a more normal level I'd expect 8-9 hours.
  7. memko, Aug 25, 2012
    Last edited: Aug 25, 2012

    memko thread starter macrumors member

    Oct 24, 2011
    Very enlightening . Thank you very much :).
  8. chrslbrt macrumors newbie

    Aug 22, 2012
  9. theineffablebob macrumors regular

    Jul 29, 2012
    I feel like it decreased by about an hour. Under ML, I can surf the web on battery on ~40% brightness for around 6 hours.
  10. flight1us macrumors newbie

    Aug 25, 2012
    Ever since i made the switch to mountain lion i've experienced horrible battery life so horrible that i may only get about 3 to 4 hours out of a full battery charge. definitely not what i expected with moderate use with bluetooth off and use is just to check email and watch netflix with all settings set to 50 percent
  11. theuserjohnny macrumors 6502

    Jul 7, 2012
    I'm currently at 93% with an est of roughly 7hrs. I have the computer on half brightness and turned off the keyboard brightness.
  12. memko thread starter macrumors member

    Oct 24, 2011
    could you give more info about your device model ? from where did you buy it? and most important how was the battery life on lion ?have you tried reverting back to lion after the issue?
  13. playsontheleft macrumors regular

    Jul 2, 2012
    3 to 4 hours while watching videos streamed from the internet sounds sort of normal to me, in all honesty. How is your battery life when you're not watching Netflix?
  14. kirky1234 macrumors member

    Jun 14, 2012
    Definitely worse! Sometimes only 2.5 hours while surfing. Currently I have 90% battery and I'm streaming a video, at 2/3 brightness... gives me 1 hour 40 min...
  15. katmeef macrumors 6502

    Jul 20, 2010
    I still get around 7-8 hrs working in the garage (using parallels) before I have to run inside to charge it.
  16. tivoboy macrumors 68040

    May 15, 2005
    don't know

    I can't really comment on ML vs. Lion, since this new rMBP came with 10.8 from the factory. I will say that the issue I HAVE is that just websurfing, opening pages and READING them results in about 4-4.5 hours tops. I have the brightness at about 2-3 clicks from the top, so don't really know the percentage. I'm not watching videos, engaging flash or other video technologies. I HAVE been using CHROME and or Safari for internet.

    Honestly, I don't really find this performance acceptable for a machine of this engineering and $$$. I was getting 3.25 hours on a 2008 MBP with a 2.5 year old battery and was really hoping to get to something like 5.5-7 hours of normal use.

    Not sure if it is the ML, the battery or the LG screen that requires a slightly higher brightness setting in order to be acceptable. These people who say 40-60% brightness is acceptable, I'm not sure if they have a different screen or are in a very low lit room?
  17. memko thread starter macrumors member

    Oct 24, 2011
    so who recommends updating to 10.8.1 ? shall we still wait for 10.8.2?
  18. cpm619 macrumors newbie

    Jun 15, 2012
    I'm definitely having battery life problems with my rmbp on 10.8.1. Somewhere around 4 hrs which is just unacceptable. I've tried all the fixes (reset PRAM, kill dock etc.) does nothing. Hoping 10.8.2 fixes this, and that it's soon.
  19. monkeybagel macrumors 65816

    Jul 24, 2011
    United States
    Are those of you that are experiencing poor battery life noticing the machine getting warm or hot?

    It seems that in OS X there is a fine line between really good battery life and fairly poor battery life, depending on the applications that are being used.

    I have a standard MacBook Pro 15" with 10.8.1 and it is getting 7-8+ hours on WiFi with 4-5 Remote Desktop (Microsoft) connections running in various desktops in what was formally known as Spaces. I have yet to see poor battery life except when I installed Windows 8. I am assuming that it was because it was using discrete graphics the entire time. But boy did it get warm when running Windows 8. I think it estimated a little under 2:00 with a full charge with Windows 8.
  20. Seany92 macrumors newbie

    Jun 3, 2012
    My rmbp shows 8hours of time remaining after a full charge. Usually the est time remaining is around 4 hours mark with just web surfing really. Seems to have improved the last day though giving better times. I did note that the odd time it was on dedicated graphics when doing nothing which would kill battery life.

    Also it does get warm when watching videos and stuff, web browsing it doesn't.

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