ML Battey Drain

Discussion in 'OS X Mountain Lion (10.8)' started by spatulaofdoom, Jul 26, 2012.

  1. spatulaofdoom macrumors newbie

    Jul 26, 2012
    Ok, Just installed ML on my MacBook (2009) and now my battery goes from Full to dead in 2 hours. With just Firefox, mail and caffeine running.

    Has anyone else had their battery life severely compromised as a result of the update?
  2. MoxFulder macrumors newbie

    Jul 25, 2012
    This is my post from another thread, same problem as you have:

    With Lion, my MBP 13" Mid 2009 has had over 7h left after being fully charged.
    Yesterday i installed ML and now it says 2:03 left when it's 100% charged...bitch please?!

    (Also it gets hot like hell)

    EDIT: Maybe this helps: (Battery is not actually defective)

  3. spatulaofdoom, Jul 26, 2012
    Last edited: Jan 21, 2014

    spatulaofdoom thread starter macrumors newbie

    Jul 26, 2012
  4. MoxFulder macrumors newbie

    Jul 25, 2012
    Deactivated Tuxera NTFS and did an SMC reset, i'm now at about 4h at 100%.
    (Still draining too fast though)
  5. ReanimationN macrumors 6502a


    Sep 7, 2011
    I'm with you guys, although my problem isn't as bad. ML has shaved a full 2 hours off my MBP's battery life. I went from getting 6-6.5 hours with Lion to 4-4.5 with ML.

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