Less than 50% battery health

Discussion in 'MacBook Air' started by brianhn1, Mar 5, 2008.

  1. brianhn1 macrumors member

    Feb 6, 2008
    Had my MBA for about 3 weeks now and my battery status as of right now is the following:

    Battery health: 49%
    Cycles: 15

    I decided to check the health after I only got 2 hours of battery time during each charge.

    1. Should I be recalibrating the battery??? I have never done it yet.
    2. Does cold weather have a large impact? I rarely take it outside.
    3. Could I just have prematurely hit a defective battery?

  2. kuebby macrumors 68000


    Jan 18, 2007
    It's defective. It's happens. Apple will take care of it.
  3. EvryDayImShufln macrumors 65816


    Sep 18, 2006
    Try recalibrating for fun (might fix it but I doubt it), but you probably got unlucky and simply hit a bad battery. It happens sometimes. Just bring it back to the apple store and tell them how short your battery life is.
  4. brianhn1 thread starter macrumors member

    Feb 6, 2008
    Another question due to my ignorance:

    Would they be willing to move the HD over to my replacement MBA or I have to do a backup myself?
  5. aristobrat macrumors G5

    Oct 14, 2005
    I wonder why they just wouldn't just replace the battery in your MBA instead of giving you a new one?
  6. NC MacGuy macrumors 603

    NC MacGuy

    Feb 9, 2005
    The good side of the grass.
    If it is bad and you take it into an Apple Store and they have another for exchange, they will ask you if you'd like the data transfered from old to new.
  7. clayj macrumors 604


    Jan 14, 2005
    visiting from downstream
    Because it might not be just the battery. MBAs are still new enough that Apple are collecting bad ones back from customers for testing purposes.
  8. NC MacGuy macrumors 603

    NC MacGuy

    Feb 9, 2005
    The good side of the grass.
    You may want to try this first:

    MacBook Air
    If the MacBook Air is on, turn it off.
    Connect the power adaptor to a working power source.
    On the MacBook Air keyboard, press (left) Shift-Control-Option along with the power button once.
    Note: You must use the keys on the left side of the MacBook Air keyboard.
    Wait 5 seconds and press the power button to start the MacBook Air.
    Apple recommends only performing an SMC reset when the MacBook Air has been properly shutdown. This prevents issues from occurring to the file system.

    While the power adaptor does not need to be connected to reset the SMC, it may be necessary in situations where the battery needs charging, or the MacBook Air has been without power for an extended period of time.

    From Apple Support pages.

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