94 % battery life

Discussion in 'MacBook Pro' started by iamjustin, Aug 20, 2007.

  1. iamjustin macrumors member

    Joined:
    Jul 21, 2007
    #1
    i had my mbp for just under a month and already istat says my battery health is at 94%. is this normal? is there anything i can donwload or do to bring the health up or is this a problem?
     
  2. EricNau Moderator emeritus

    EricNau

    Joined:
    Apr 27, 2005
    Location:
    San Francisco, CA
  3. iBookG4user macrumors 604

    iBookG4user

    Joined:
    Jun 27, 2006
    Location:
    Seattle, WA
    #3
    From my experience MacBook Pro batteries are just bad to begin with, but try calibrating as suggested above. Sometimes that will raise the capacity.
     
  4. vicious7 macrumors 6502a

    vicious7

    Joined:
    Jul 16, 2007
    Location:
    Jacked into the net...
    #4
    Also, don't be afraid to use your battery. Their potency naturally erodes over time and use. Once in a while, discharge your battery to about 25% and charge it up again. Don't leave it plugged in all the time. You should only be calibrating your battery once a month.
     
  5. kuebby macrumors 68000

    kuebby

    Joined:
    Jan 18, 2007
    Location:
    SFV
    #5
    A related question:

    I just bought a used MBP and the battery health is listed by iStat as 52%. I haven't calibrated it yet so I don't know yet if that will help it at all. My question is if there is any chance Apple would give me a new battery (still under Applecare). Otherwise is buying a battery from eBay safe? They seem to be going for good prices there.
     
  6. DeepShadows macrumors newbie

    Joined:
    Aug 13, 2007
    #6
    I just got a brand new OEM Apple MBP battery still in the package that apple ships them in for $49 and it works perfect. :)
     
  7. klymr macrumors 65816

    Joined:
    May 16, 2007
    Location:
    Utah
    #7
    Calibrate it and it should bring it back up. Mine has dropped down to 99% and it's only on the 3rd cycle. My first battery (slowly developed charging problems) had dropped down to 96% and after a while it jumped back up to 100%. I think you'll be fine.
     
  8. bobcan macrumors 6502a

    bobcan

    Joined:
    Jan 8, 2007
    Location:
    Sunny but Cold.. Canada
    #8
    Would U care to elaborate on this...

    This is a Stock Apple Batt or Apple-like item :confused:... Please advise and perhaps Post a Link for us "Little People" who might Bite on the Deal too!! Thnx_ ;)
     
  9. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #9
    the battery health does deviate. its like everything else. it will change up and down depending on certian conditions.

    e.g. as the battery runs low (10%-15%) the health might drop a few points. 90% health is still good!
     
  10. polycat33 macrumors 6502

    Joined:
    Jul 1, 2007
    Location:
    Alexandria, VA
    #10
    That sounds low to me. After a month I was still at 100%. I'm at 97% now at two months (and it just dropped down from 98% a few days ago). What's your battery usage like? How many cycles are you at? You'll for sure want to try calibrating, it could be that you're getting more than 94% and with calibration the comp will realize that and set it up to it's correct percentage.
     
  11. DeepShadows macrumors newbie

    Joined:
    Aug 13, 2007
    #11
    Yup, real stock apple battery, the real thing...

    http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&rd=1&item=200135825514&ssPageName=STRK:MEWN:IT&ih=010

    That deal ended, but you can find similar deals like this:

    http://cgi.ebay.ca/orig-A1175-Batte...yZ116323QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

    I got a really good deal, looks like they aren't as cheap anymore, I would hunt around... although 59 USD is still cheap for a brand new battery.
     

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