Brand New MacBook fully charged, battery indicator only shows 97%

Discussion in 'MacBook Pro' started by StuartGaia, May 11, 2008.

  1. StuartGaia macrumors newbie

    Joined:
    May 11, 2008
    #1
    I got my wife a brand new MacBook for her birthday a week ago. The first couple of days, when fully charged it showed 100% on the battery charge indicator (upper right of screen). Then over a week's time it dropped gradually to where now it only shows 97% when the thing is fully charged (overnight).

    We went to 2 Apple Stores and in both places their 'MacGenius' people gave what I felt were bullsh*t answers about what was going on. I feel that they are covering up an issue they know about. I feel it is either bad design, or bad implementation, for a week old laptop to not be able to achieve 100% charge after an all night charge.

    Am I missing something? Has anyone else experienced a similar problem?

    I myself have a 1 year old MacBook that gets to 100% every time I charge it. Sure the battery doesn't last as long as when it was new, but at least I know it's getting to 100% of the charge that it is still capable of.
     
  2. siurpeeman macrumors 603

    siurpeeman

    Joined:
    Dec 2, 2006
    Location:
    the OC
    #3
    it's a protective measure to prevent too many charge/discharge cycles, saving the life of the battery.
     
  3. eXan macrumors 601

    eXan

    Joined:
    Jan 10, 2005
    Location:
    Russia
    #4
    Sometimes computer draws more power than the power supply can deliver so it drains the battery a bit. The reason it doesnt recharge right away is because Apple set a limit to when start recharging - I think its 95% and less. Its done to save charging cycles thus giving the battery longer life.

    Or if you unplug the power for a short time draining only a couple of % and then plug it in again the battery wont recharge for the same reason.

    No need to get mad.
     
  4. shoarthing macrumors member

    Joined:
    Dec 4, 2005
    #5
    . . the issue is with the displayed [& estimated] battery life, not with the true life: the calibration link in psychofreak's post, or this more recent one, will sort you out.
     

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