2016 MBP - Battery capacity after 24 cycles

Discussion in 'MacBook Pro' started by glhughes, Jun 18, 2017.

  1. glhughes macrumors regular

    Joined:
    Jul 4, 2009
    #1
    I had the top case replaced for keyboard issues back in March (spacebar jammed, keys not registering or double-registering).

    The new battery has 24 cycles on it but only has a capacity of 4652 mAh -- or 97.1% of the rated capacity.

    The last time I checked the battery capacity it was at slightly over 98% with 20 cycles.

    Does the rate of battery degradation slow down over time? If not, I can't fathom how this battery will make it to 1000 cycles.

    Thanks for you help.
     
  2. Poki macrumors 6502a

    Poki

    Joined:
    Mar 21, 2012
    #2
    The age of the battery has an impact just as big as the load cycles. If it's one of the earliest 2016 MBPs, the battery is 9 months old by now, so 97% wouldn't be that bad.
     
  3. glhughes thread starter macrumors regular

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    Jul 4, 2009
    #3
    The top case was replaced in late March 2017 with a battery manufactured in early December 2016. The battery has been in use for 2.5 months.

    Also note the 1% drop (98% to 97%) over the last 4 cycles which has occurred within the last 2 weeks.
     
  4. Poki macrumors 6502a

    Poki

    Joined:
    Mar 21, 2012
    #4
    Battery degradation is not linear, with that little amount of data points it's impossible to say if something's wrong with your battery. Do you have Apple Care? If so, Apple usually replaces batteries below 80% capacity under Apple Care.
     
  5. glhughes thread starter macrumors regular

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    Jul 4, 2009
    #5
    I do not have Apple Care (I have never needed it in 10+ years of owning many other Apple laptops and phones), however I am considering it given the ridiculously low quality of this machine and the number of issues I have already had with it over the last 8 months. Either that or getting rid of the machine altogether.
     
  6. Stefan johansson macrumors 65816

    Stefan johansson

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    Apr 13, 2017
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    Sweden
    #6
    Battery capacity,even on brand new batteries,is also affected by things like temperature and moisture,so,anywhere between 96 and 100 percent would be normal for the computer described here.
     
  7. fokmik macrumors 65816

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    Oct 28, 2016
    Location:
    USA
    #7
    yes, if i look at my battery life under load and high temperature, i have 97%, but when is on idle or after i power it on, i have 99 or 100%
     
  8. Stefan johansson macrumors 65816

    Stefan johansson

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    #8
    Exactly.
     
  9. montanaco macrumors regular

    montanaco

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    Nov 1, 2016
    #9
    What you're experiencing with the battery is normal, as many have said already. But if you feel so negatively then just return it. Why cause yourself so much stress for a machine you feel the need to hate?
     
  10. b_scott macrumors 6502a

    b_scott

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  11. ryannel2003 macrumors 68000

    ryannel2003

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    Jan 30, 2005
    Location:
    Greenville, NC
    #11
    My 2016 nTB Pro had 74 cycles on the battery and I still had 96% health before I sold it. It would jump up to 98% sometimes before going back down to 96%.
     
  12. Stefan johansson macrumors 65816

    Stefan johansson

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    Apr 13, 2017
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    Sweden
    #12
    My MacBook Pro varies on full charge between 95 and 99 percent,guess that's rather good for a three years old laptop. Variations between 94 and 101 percent is rather normal even for a brand new laptop,regardless of model.
     
  13. glhughes thread starter macrumors regular

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    Jul 4, 2009
    #13
    Thanks for your reply. My 8 year old Air has 83% remaining (400 cycles). My 4 year old rMBP has only 75% remaining after 350 cycles. My 2017 rMB is at 102% after 3 cycles.

    I will keep an eye on it.
     
  14. Christian 5G macrumors 6502a

    Christian 5G

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    Jun 16, 2010
    Location:
    Orange County, CA
    #14
    Interesting when you said that spacebar jammed because my spacebar has been becoming very different as well, I need to push a bit harder now and it really does feel different, same goes for Caps Lock button, those buttons just require me to push them harder, is anybody else experiencing this?
     
  15. glhughes thread starter macrumors regular

    Joined:
    Jul 4, 2009
    #15
    It permanently jammed on my first keyboard and when they took off the key cap to try to fix it they said something (I assume a part of the butterfly mechanism) "fell out" of the machine -> had to replace the top case.

    It jammed on the right side on my replacement keyboard a few days ago. It has since somewhat unjammed itself but it still doesn't feel right when typing / angle I hit it when typing with my thumb. I really have to consciously whack it which obviously affects typing overall.
     

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