WHOA! Where did my batery life go?

Discussion in 'MacBook Pro' started by klymr, Jul 30, 2007.

  1. klymr macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #1
    I just looked at the battery meter on my MBP, and it's saying I have 17 minutes left. I had it plugged in and fully charged until I left for class. I have been surfing the net and typing in Word, but that's stuff I do in class everyday. Usually around this time I have about an hour and a half of battery left. I've been using it for just over an hour right now. Could it be the fact that I downloaded a few podcasts and then closed iTunes? I wouldn't think that it'd drain that fast because of that. Is it supposed to show a negative amperage like that? Curious...
     

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  2. kolax macrumors G3

    Joined:
    Mar 20, 2007
    #2
    Have you calibrated your battery recently?

    Charge the battery to 100% then let it discharge all the way until the laptop goes to deep sleep mode.
     
  3. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #3
    Calibrated it about a month ago. It shouldn't need to be done again so soon, should it? It was at 100% health and 100% charge when I left for class. Luckily class got out at about 8% left.
     
  4. kolax macrumors G3

    Joined:
    Mar 20, 2007
    #4
    Well I'd recommend calibrating your battery once a month if you are using your laptop off battery mode a lot.

    Every little helps.
     
  5. ultimateceej macrumors regular

    ultimateceej

    Joined:
    Jul 24, 2007
    Location:
    Texas
    #5
    This may help depending on your particular battery. I have similar problems sometimes but unfortunately, I don't qualify for that plan. :(
     
  6. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #6
    Yeah, I don't fit it either.

    I have a 2.4ghz 17" high res. I've only had it about a month.
     
  7. vandlism macrumors 6502

    Joined:
    Jun 20, 2007
    #7
    Audio or video podcasts? If it's doing a lot of talking with Wi-Fi and read/writing to the hard drive, then yeah, you'll begin to drain your battery.
     
  8. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #8
    They were all video podcasts. I only had iTunes open about 3 minutes. Would 3 minutes of DLing drain an extra hour off the battery?
     
  9. powz macrumors regular

    Joined:
    Apr 24, 2007
    #9
    Have you tried installing the latest battery firmware update? If you continue having probs I'd definitely try contacting Applecare.
     
  10. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #10
    I haven't (or maybe I have). Is it something that was recently released? I checked the software updates yesterday and I'm all up to par.
     
  11. klymr thread starter macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #11
    I took a look at the battery stats again last night, and the amperage was down to about -3,500. When I first turned the computer on it was about 98% charged and showed I had 2 hours and 7 minutes of life. I moved those video podcasts from iTunes to my iPod and it drained from 98% to 94% (not that unusual) and the expected life dropped to about an hour and a half (again, might not be unexpected as I was just moving stuff causing a bit of load on the HDD). I'll check out everything when I get off work today and see what I can come up with.
     

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