82% on battery but only 2 hours 30 minutes remaining. WTF

Discussion in 'MacBook Pro' started by Boesky, Aug 22, 2009.

  1. Boesky macrumors 6502

    Joined:
    Jul 16, 2009
    #1
    Only application I have open is Safari. And Im only on this website...
    :confused:
     
  2. r.j.s Moderator emeritus

    r.j.s

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    Mar 7, 2007
    Location:
    Texas
  3. NT1440 macrumors G4

    NT1440

    Joined:
    May 18, 2008
    Location:
    Hartford, CT
    #3
    Age of battery
    screen brightness
    keypad brightness
    bluetooth
    file sharing

    We need all this kind of info before we can do anything for you.
     
  4. Heb1228 macrumors 68020

    Heb1228

    Joined:
    Feb 3, 2004
    Location:
    Virginia Beach, VA
    #4
    Quit making useless threads. Search MR. Search Google. You don't even give pertinent information. How do we know you're not on an iBook G3? It would be pretty good battery life for that machine.
     
  5. Boesky thread starter macrumors 6502

    Joined:
    Jul 16, 2009
    #5
    7 weeks
    brightness is 8 bars
    keypad brightness is off
    bluetooth is off
    no file sharing

    MACBOOK PRO , the new june edition... the one with 7 hours for battery life.
     
  6. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #6
    Download coconut battery, what does it say about the health?

    82% left ... yeah, that is meaningless. How long have you been using it on battery? What are you using to connect, wifi?
     
  7. Boesky thread starter macrumors 6502

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    Jul 16, 2009
  8. r.j.s Moderator emeritus

    r.j.s

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    Mar 7, 2007
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    Texas
    #8
    How long have you been using it on battery?
     
  9. ThirteenXIII macrumors 6502a

    Joined:
    Mar 8, 2008
    #9
    take a screen shot of it (coconut battery)
    Command Shift 4 then Space bar

    what id suggest isjust run down the battery on this usage. then charge it all the way up and use it on the power adapter for a day or so and then try again with just the battery for awhile.
    you should get around 5.5Hrs ~ 7HRS

    is this a baseline macbookpro 15"? the one with just the 9400 or does it have 9400+9600 graphics card?
    cuz if its on the higher end card it may impede on the overall battery performance.
     
  10. Boesky thread starter macrumors 6502

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    Jul 16, 2009
    #10
    mbp with the one graphics card cheapest 15 inch
     
  11. r.j.s Moderator emeritus

    r.j.s

    Joined:
    Mar 7, 2007
    Location:
    Texas
    #11
    You still haven't answered the most important question ... how long have you been using it on battery?
     
  12. Boesky thread starter macrumors 6502

    Joined:
    Jul 16, 2009
    #12
    less than one hour, then it hit 82%
     
  13. Thiol macrumors 6502a

    Thiol

    Joined:
    Jan 26, 2008
    #13
    Did you calibrate it?
     
  14. r.j.s Moderator emeritus

    r.j.s

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    Mar 7, 2007
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    Texas
    #14
    So, you're on track to have about 4-5 hours on one charge using wifi, that's about average.
     
  15. Boesky thread starter macrumors 6502

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    Jul 16, 2009
    #15
    yes
     
  16. Heb1228 macrumors 68020

    Heb1228

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    Feb 3, 2004
    Location:
    Virginia Beach, VA
    #16
    Check activity monitor. Make sure all processes is chosen at the top. Sort by CPU to see if anything is using more CPU than it should. Then sort by kind to make sure everything running is Intel.
     
  17. PolySciSurfer macrumors 6502

    Joined:
    Jan 9, 2009
    Location:
    California
    #17
    Battery life is calculated in REAL TIME. Meaning you can have 82% battery life, and one minute it will say 2 hours left, next minute it will say 6 hours. Depending upon what your doing on the computer. Don't believe me? Run this test...

    Step 1: Open Text Edit ONLY. Wait 5 minutes check battery calculation. Note time.

    Step 2: Open Safari ONLY, run youtube videos continuously. Wait 5 minutes, check battery calculation while video is running. Note time.

    This is common knowledge from the iBook days. :D
     
  18. stylinexpat macrumors 6502a

    Joined:
    Mar 6, 2009
    #18
    I am showing 1:18 minutes on mine now. Your lucky if you get any where near 3 hours on a Macbook Pro 15". They should have some long last ones with the 13" models out there.
     
  19. Thomas Davie macrumors 6502

    Joined:
    Jan 20, 2004
    #19
    Six of one, half a dozen of the other. Jan/09 17 inch model, with the 320 gb 7200 rpm hard drive. Running the 9400 graphics, and playing Civ 3 multiplayer inside of Parallels 4, bluetooth off, wifi on, screen brightness set to 40%, keyboard backlight off, and I am getting around 5 hours. Works for me, YMMV.

    Tom

    (play some flash inside internet explorer in parallels and the life dips down). Yer battery is ok.

    Tom
     
  20. Ricanlegend macrumors 6502a

    Joined:
    Apr 21, 2009
    Location:
    Bronx,Ny
    #20
    dude i got the macbook pro late 09 edition and i get 5 hours with full brightness on wifi, just make sure you calibrate the battery properly like apple say and you should be fine
     
  21. camflan macrumors member

    Joined:
    Feb 3, 2008
    #21
    It's flash. It's KILLING your battery life. I have clicktoflash, and I get over 5.5 hours of battery life while surfing as long as I'm not using flash. Once I enable flash content the battery life dives, closing the page with enabled flash content, my battery life returns to expected.

    Adobe flash is god awful, avoid at all costs.
     
  22. Sirolway macrumors 6502

    Joined:
    Jun 13, 2009
    Location:
    London
    #22
    I was getting the same sort of performance (~2 hours) out of my brand new 13" uMBP
    Activity Monitor showed Carbonite using 90% cpu constantly. Uninstalling that now give me 7-8 hours battery (unless iAntiVirus is doing a scan, in which case I kill the process...)

    Activity Monitor is your friend ...
     
  23. AppleNewton macrumors 68000

    AppleNewton

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    Apr 3, 2007
    Location:
    1 Finite Place
    #23
    i have a 15" late 2008 uMBP 2.2ghz 2gb 250gb drive. 9400+9600 i get around 5hours on it using either or graphics card, using firefox, bluetooth off, wifi on, brightness half, illumination off, itunes running.

    this is with a removable battery. about 50 cycle charges from February.

    either got lucky with battery or you need to calibrate it a bit more and monitor your activity.
     

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