Battery health down to 99% after 31 cycles - Why God, why?!

Discussion in 'MacBook Pro' started by Neutral Gamer, Dec 1, 2007.

  1. Neutral Gamer macrumors 6502a

    Neutral Gamer

    I knew this day would come eventually, but I still felt like I'd been punched in the stomach when I saw the health no longer at the 100% I was accustomed to in iStat.

    Why God, why?!

    Death is the only option for me now that my MBP is no longer perfect. I feel dirty using it - despite the 1% drop it's only half the laptop it used to be in my opinion! Time to buy a new one me thinks ... :D

    Seriously though, is this normal? I've had it for 3 months now; is this what you'd expect to happen after that amount of time? Should I use it more on the battery to prevent it falling to 98% as quick?

    Also, can I expect the drops to be linear or should I brace myself for one day seeing the battery health fall several percent at once? :eek:
  2. mrwizardno2 macrumors 6502a


    Jun 19, 2007
    Columbus, OH
    Mine's at 96% after 49 cycles, if that makes you feel any better!
  3. xUKHCx Administrator emeritus


    Jan 15, 2006
    The Kop
  4. Neutral Gamer thread starter macrumors 6502a

    Neutral Gamer

    Eeek! So that's what I've got to look forward to! I'll write that figure down and see how it compares when I reach the same milestone. :)

    Yeah, I've calibrated a couple of times although it's been several weeks since I last did so. How often do you calibrate yours?

    Also am I doing it properly, as on the calibration instructions at point 5 it says:

    "Turn off the computer or allow it to sleep for five hours or longer."

    Does that mean that you should turn it off for five hours or only let it sleep for five hours?
  5. jackc macrumors 65816


    Oct 19, 2003
    It's over, put it up on ebay and for God's sake don't tell anyone about this defect.
  6. chaosbunny macrumors 68000


    Mar 11, 2005
    down to earth, far away from any clouds
    Well, it's perfectly normal, here is my powerbooks battery after 2,5 years:

    Bild 2.png
  7. xUKHCx Administrator emeritus


    Jan 15, 2006
    The Kop
    i've only calibrated once but then again I haven't had my machine for very long. I think the suggested time is once every month. I ran my computer until it sent itself to sleep then left it for about 7 hours by which time it had completely turned itself off. I think the point for the suggested time of 5 hours is to make sure there is no charge left in the battery what so ever.

    You can use Coconutbattery to view the health of your battery and save reports from time to time to see how your battery health is going.
  8. JNB macrumors 604


    Oct 7, 2004
    In a Hell predominately of my own making

    I think that if the batteries are being cycled that much intentionally, it's being overdone. Mine's 8 months old, been deep-cycled about six times, and never been "properly" calibrated, or at least exactly as the KB article specifies. At that, I've gained battery capacity (5328 mAh available now vs. 5200 in May).
  9. Rotary8 macrumors regular

    Oct 24, 2006
    178 cycles on mbp, 94% health. lol. never calibrated but, will do so today. probably run cputest to drain it quickly.
  10. fluidedge macrumors 65816


    Nov 1, 2007
    after about 500 cycles mines down to under 30%!!!

    It'll do about 30 minutes on a good day!

    (new battery for xmas??)
  11. Neutral Gamer thread starter macrumors 6502a

    Neutral Gamer

    Wow. You're battery capacity's actually gone up? That's amazing!

    I better start calibrating my battery more. But part of me just thinks, just use it how I want without thinking about it and then when the health becomes unacceptable just buy myself a new battery. It's only £99!

    Cos at the moment I'm always obsessed with it and prepare myself every day to see if the health has gone down - that's too stressful man!

    I think Santa Claus needs to get your house quick! ;)
  12. xUKHCx Administrator emeritus


    Jan 15, 2006
    The Kop
    Mine too

    Picture 1.png
  13. paddy macrumors 6502a


    Jun 25, 2005
    After 134 cycles my batteries still at 100%. I honestly have no idea why, I mean its used daily for a few hours and I don't take particularly good care of the battery...
  14. 10-Dee-Q macrumors 6502

    May 10, 2006
    Bandung, West Java, Indonesia & Singapore
    i have 1 year old black macbook
    and it stated:


    i coulndt believe it but that's the fact :p
  15. piginawig macrumors newbie

    Nov 29, 2007
    Wow, one percent? Nothing to cry over, and nothing to buy a new computer over, just buy a new battery...
  16. EvryDayImShufln macrumors 65816


    Sep 18, 2006
    Mine is 95% after the same amount of cycles as you. Lucky bastard!
  17. Neutral Gamer thread starter macrumors 6502a

    Neutral Gamer

    That's impressive.

    That's REALLY impressive.

    You do know I'm being sarcastic right? :)

    Haha. Thanks mate, you've made my day! :D
  18. cornopaez macrumors regular


    May 1, 2007
    in a practice room or a MacBook.
    Mine has 229 cicles and it's in an astonishing 84% :eek: I've never understood the way batteries work. What causes that value to drop?
  19. Jocko macrumors member

    Jul 23, 2007
    I think that's physically impossible. If it really does report those numbers to you, there must be a bug somewhere in the hardware or software that generates that info.

    I'm at 97% after 19 cycles. I'm not sure, but it sounds like the OP needs to find a hobby or something.
  20. aethelbert macrumors 601

    Jun 1, 2007
    Chicago, IL, USA
    Mine is at 100% at 106 cycles, about four months old. It's possible, so a new battery might be better.
  21. jackiecanev2 macrumors 65816


    Jul 6, 2007
    Yeesh. When I got my MB, it was at 1 load cycle at 99% already. Now, it's at 93 cycles, 87% capacity.
  22. Neutral Gamer thread starter macrumors 6502a

    Neutral Gamer

    A Miracle !

    My friends, Christmas is near and I feel a miracle has occurred. I calibrated my battery today and low and behold after 32 cycles I'm back up at 100% health again in iStat.

    But just to make sure I downloaded coconutBattery as xUKHCx recommended and as the attached screenshot below shows, things are looking pretty good! I've got more battery capacity than I started with.

    Now I can go back to using / loving my Macbook Pro rather than worrying about lost health.

    It may be early but I say Merry Christmas ! :D

    Attached Files:

  23. kajitox macrumors 6502a


    May 2, 2007
    So if after 59 cycles my battery like is 87%, should I think about seeing if it is one of those batteries that needs replacement? (My MBP is about 7 mo. old)

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