battery is horrible under snow leopard (solved)

Discussion in 'MacBook Pro' started by vertigo78, Sep 30, 2009.

  1. vertigo78 macrumors regular

    Joined:
    Oct 2, 2008
    #1
    right now i have the brightness down to the lowest setting and only have firefox open. i have a 76% charge remaining and the battery meter is telling i have 1:42 left. i have a late 2008 unibody macbook pro. before snow leopard i could consistently get 3 hours of battery life with wifi on and 4 hours with no wifi. after snow leopard i cant get beyond 2 hours even with wifi off and no programs running. has anyone with a late 2008 mbp experienced bad battery life?
     
  2. MacsOnAnabolics macrumors regular

    MacsOnAnabolics

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    Rancho Cucamonga, CA
  3. p3ncil macrumors regular

    Joined:
    Jul 6, 2009
    #3
    when was the last time you calibrated your battery?
     
  4. MacsOnAnabolics macrumors regular

    MacsOnAnabolics

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    #4
    Download coconut battery. This a free application and it will tell your the health of your battery. If it is poor and you have apple care, kindly ask them to replace it for you.
     
  5. Eidorian macrumors Penryn

    Eidorian

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    Location:
    Indianapolis
    #5
    I've lost about 30 minutes of battery life moving to Snow Leopard.
     
  6. DAMNiatx macrumors 6502a

    DAMNiatx

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    Jan 20, 2009
    #6
    +1
     
  7. MacsOnAnabolics macrumors regular

    MacsOnAnabolics

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    #7
    I wonder why that might be? OpenCL is more energy demanding to run? I thought SL was suppose to be more efficient, thus, required less power to operate?
     
  8. vertigo78 thread starter macrumors regular

    Joined:
    Oct 2, 2008
    #8
    2.53ghz 4gb 320gb

    i have coconut battery and istat pro it says the battery has a 96% health. before snow leopard it said 99%. i have calibrated several times but that doesn't change anything.
     
  9. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #9
    What's using OpenCL again?

    Losing about 30 minutes of life under Snow Leopard seems to be par for the course.
     
  10. cluthz macrumors 68040

    cluthz

    Joined:
    Jun 15, 2004
    Location:
    Norway
    #10
    Hmm I have about the same after installing SL.
    Getting 3.5hrs to 4hrs (if i really try hard :p)
     
  11. vertigo78 thread starter macrumors regular

    Joined:
    Oct 2, 2008
    #11
    also if i ever start using flash (youtube, hulu) im lucky if it even lasts an hour.

    btw i have 96 cycles in 4 months. its a refurbished computer but i originally got it with 3 cycles and 100% health.
     
  12. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #12
    That isn't anything new. It's even worse under Snow Leopard unless you use Firefox or run Safari in 32-bit mode.
     
  13. vertigo78 thread starter macrumors regular

    Joined:
    Oct 2, 2008
    #13
    so i reset the smc and have gained 2+ hours of battery life immediately after doing this.

    follow these instructions if you have unusually low battery life after switching to snow leopard:
    http://support.apple.com/kb/HT1411
     

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