Battery health declining?

Discussion in 'Mac Basics and Help' started by Calsef, Mar 15, 2008.

  1. Calsef macrumors newbie

    Joined:
    Jan 20, 2008
    Location:
    US of A
    #1
    I just got a MBP about two weeks ago. I've gone through about 9 charge cycles, and my battery health has been dropping much faster than I think it should. I've been using iStat pro and Coconut battery, and my battery health is already down to 96%. Is this normal? I have friends with over 30 cycles who still have 100% health, and I'm not doing anything weird in terms of charging or use.

    Thanks for any help
     
  2. JSchwage macrumors 6502a

    JSchwage

    Joined:
    May 5, 2006
    Location:
    Rochester, NY
    #2
    Hmm, that's odd. My iStat Pro is showing 100% battery health with 33 cycles.
     
  3. pianoman macrumors 68000

    pianoman

    Joined:
    May 31, 2006
    #3
    read this. it might not answer your question directly, but it's good information to have. have you calibrated the battery at all?
     
  4. techguy40 macrumors regular

    Joined:
    Mar 1, 2008
    #4
    How come by battery shows 97% charged, health 100% and its fully charged and plug is in showing green? why its not showing 100% charged when fully charged?


    I had the macbook pro for one week now and 4 cycles shows.
     
  5. Silent!Avenger macrumors newbie

    Joined:
    Mar 15, 2008
    #5
    4 cycles - 98% Health.
    I'm using the newest Penryn edition of the MBP.
    Used iStat Pro
     
  6. flopticalcube macrumors G4

    flopticalcube

    Joined:
    Sep 7, 2006
    Location:
    In the velcro closure of America's Hat
    #6
    It won't start charging again until it reaches 95-96% charge.
     
  7. techguy40 macrumors regular

    Joined:
    Mar 1, 2008
    #7
    Thanks


    Is it better to have macbook pro plug in when near a plug?

    What is a battery cycle? what causes me to already have 4 cycles in one week? How is it computed?


    how many cycles will a macbook pro battery stop working?
     
  8. Silent!Avenger macrumors newbie

    Joined:
    Mar 15, 2008
    #8
    After many cycles, your battery will not be able to hold its charge as good. You might be able to get 2 or 3 hrs max, as opposed to over 5 hrs. Plugging it in is one way of stopping the wear of your battery. But keep in mind, as time goes on, your battery will 'naturally' become weaker. I plug my laptop in when Im near a socket, but I don't stress out too much about it. If worst comes worst, you can always buy a new battery. From experience, most of my batteries lasted 2 years before they needed replacement (they held less about 40-50% of their original charge). I would probably say I do about 250 cycles a year.
     

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