What is acceptable battery health on a used MBA?

Discussion in 'MacBook Air' started by Rocko99991, Aug 18, 2017.

  1. Rocko99991, Aug 18, 2017
    Last edited: Aug 18, 2017

    Rocko99991 macrumors 6502

    Rocko99991

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    Jul 25, 2017
    #1
    I bought a used 2012 13" MBA on ebay. It was listed in good condition, everything working etc. The machine is in great shape. The battery says 79% health. Is this acceptable for a laptop listed in good condition? 108 cycles FYI.
     
  2. Audit13 macrumors 6502a

    Audit13

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    #2
    Did you you find the battery health using an app? How old is the MBA? Does it have the original battery?

    108 cycles could be considered very low or high, depending on the age of the Air.
     
  3. Rocko99991, Aug 18, 2017
    Last edited: Aug 18, 2017

    Rocko99991 thread starter macrumors 6502

    Rocko99991

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    #3
    Yes, using an battery health app. I reset the PRAM and SMC.

    See stats attached.
     

    Attached Files:

  4. Audit13 macrumors 6502a

    Audit13

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    #4
    After 108 cycles, I'm surprised it's down to 79%; however, that could be normal depending on the age of the MBA.
     
  5. Rocko99991 thread starter macrumors 6502

    Rocko99991

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    #5
    5284 max capacity seems low for only 108 cycles.
     
  6. Audit13 macrumors 6502a

    Audit13

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    #6
    Which MBA do you have?

    I have a mid-2013 13" with 454 cycles, design capacity is 7150, capacity is down to 5883 mAH (82%), and battery manufacture date is 2014-01-05 as per coconut battery app.
     
  7. Rocko99991 thread starter macrumors 6502

    Rocko99991

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    #7
    Mid 2012. Battery date is June 22, 2012. I wonder why it's in such bad shape with only 108 cycles? Constantly plugged in?
     
  8. Audit13 macrumors 6502a

    Audit13

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    #8
    These batteries will lose capacity over time, regardless of whether they are or are not used.

    In your case, I would say that 79% is not bad at all.
     
  9. Johnny365 macrumors regular

    Johnny365

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    #9
    How m
    How much you pay?
     
  10. Rocko99991 thread starter macrumors 6502

    Rocko99991

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    #10
    $440. Laptop is in very good condition. No dings, screen perfect. Just battery aint too hot.
     
  11. Audit13 macrumors 6502a

    Audit13

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    #11
    Good price for its physical condition.

    To me, the battery isn't bad at all.
     
  12. Shirasaki macrumors 603

    Shirasaki

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    #12
    As a reference:
    My Macbook Air early 2014 model, after 2 years of usage, 121 cycles but still 97.9% of design capacity.
    And yes, I plug it on the power source all day long.
    Therefore, I would not consider your macbook battery good, but not too bad either. If you worry a lot, consider replacing one but I would discourage this option.
     
  13. tentales macrumors 6502a

    tentales

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    #13
    The 5 year battery age contributed more to the 20% capacity loss than the # of cycles obviously.
    Heat & cold cycles over its history can also affect battery health. Maybe it was rarely fully drained, albeit that's less important in modern lithium cells than it used to be.

    FWIW, drain your battery fully, then reset PRAM/SMC and fully charge it while not using it at the same time.
    $440 is a good deal. I wouldn't bother replacing the battery until it hits 60% or less.

    Batteries are unfortunately the consumable part of every electronic gadget and need to be replaced eventually.
    I have a friend that used a white MB from 2006 until 2015 with the orig. battery, down to less than 15% capacity, but she didn't travel further than from kitchen to living room, so having it always plugged in gave her 9 years usability for light work. Somebody still gave her $75 for it.
    --- Post Merged, Aug 19, 2017 ---
    That's excellent stats. Did you buy the '14 model only in 2015 ?
    Is the battery age 2 or 3 years ?
    In any case, OP's 5 year battery is about right in capacity depletion for that age. I estimate about 5% loss per year of usage with an average of 50 cycles a year, so you're doing great if your battery still shows 97%+.
     
  14. Rocko99991 thread starter macrumors 6502

    Rocko99991

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    #14
    This is great information. Thank you, it's much appreciated.
     
  15. _Kiki_ macrumors 6502

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    #15
    How much memory 8GB or 4 GB? Which model of CPU i5 or i7 ?
    How much capacity of SSD?
     
  16. Rocko99991 thread starter macrumors 6502

    Rocko99991

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    #16
     

    Attached Files:

  17. Johnny365 macrumors regular

    Johnny365

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    #17
    Nice, mine's a Early 2014 model, but doesn't indicate that in the specs. Just that it is 1.4GHz Intel Core i5, 8GB Ram, etc. Strange!
     
  18. Audit13 macrumors 6502a

    Audit13

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    #18
    Which os is on your early 2014? You should see all the specs under system report.
     
  19. Johnny365 macrumors regular

    Johnny365

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    #19
    It's the latest version. I mean under "About this Mac" it just lists it as Macbook Air, and then 1.4GHz i5 (which is Early 2014). Beyond, that it doesn't really specify "Early 2014" anywhere. Model Identifier is 6,2
     
  20. Audit13 macrumors 6502a

    Audit13

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    #20
    Strange that it doesn't specify "Early 2014".
     

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  21. Beachguy macrumors 6502a

    Beachguy

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    #21
    My 2011 is at 81% so that sounds reasonable.
     
  22. Johnny365 macrumors regular

    Johnny365

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    #22
    Sorry to hijack thread, but here's my screenshot: [​IMG]
     
  23. Audit13 macrumors 6502a

    Audit13

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  24. Johnny365 macrumors regular

    Johnny365

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    #24
    I believe so. I got it used a few months ago and even online, some people report the Early 2014 not showing up in the "About this Mac" section.
     
  25. Audit13 macrumors 6502a

    Audit13

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    #25
    Does the serial number match the serial # printed on the bottom of the Macbook?

    The serial number from your screen shot indicates that it is a mid 2013?
     

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