Ways to reset cycle count to 0?

Discussion in 'MacBook Pro' started by DangerousDave2k, Jul 25, 2018.

  1. DangerousDave2k macrumors member

    Jul 11, 2014
    I recently bought a 2015 Macbook Pro 13 Retina second hand, which turned up showing a cycle count of 0. The seller claims that the battery has not been changed, so I'm wondering if there's any other way for this to happen?
  2. Newtons Apple macrumors Core

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida
    Usually it mean the battery lacks the chip that keeps track of this and other information. This would mean the battery had been replaced.

    What apps are you using to tell the cycle count?
  3. zshane1125 macrumors regular

    Jul 16, 2018
    System Report --> Power
  4. DangerousDave2k thread starter macrumors member

    Jul 11, 2014
  5. Audit13 macrumors 601


    Apr 19, 2017
    Toronto, Ontario, Canada
    Maybe the battery is malfunctioning and can't provide a cycle count?
  6. JPack macrumors 601


    Mar 27, 2017
    The data memory on the OEM battery is sealed with a key (password). Most users can't simply run in and reset the logs.

    In all likelihood, the battery is not original.
  7. Randall2018 Suspended

    Jul 14, 2018
    Sounds like a glitch in the battery making it not report the count to me. How’s the battery life on it? You might want to consider replacing the battery since it’s already three years old and it seems to be at least having his issue.
  8. lambertjohn macrumors 6502a

    Jun 17, 2012
    Did you also ask the seller if he had ever used the computer on battery only, thus requiring him to recharge the computer after use? If he says yes, he's used it on battery many times, then I would say there's a problem with the battery cycle count mechanism, whatever that is. Or...he's telling a tall one claiming the battery has never been replaced. Humans have been known to lie, you know.
  9. DangerousDave2k thread starter macrumors member

    Jul 11, 2014
    Ok so the battery cycle count has ticked up to 2. So does that mean it's a legit battery with the correct chip onboard (maybe an official replacement?), or could there still be a problem here?
  10. NT1440 macrumors G5


    May 18, 2008
    It sounds like the seller did you a favor and threw a new battery in for you.
  11. Stux macrumors member

    Jun 25, 2018
    Maybe the owner just had the keyboard fixed under the extended replacement program ... which involves a battery replacement too?

    Then sold it off.

    It’s what I would’ve done ;)
  12. JPack macrumors 601


    Mar 27, 2017
    That doesn't make any sense.
  13. DeanLubaki macrumors 6502a


    May 29, 2014
    No, it makes sense. I just got a 2018 MacBook Pro and sold my 2016 MacBook Pro. The Genius Bar replaced the keyboard, which actually involves replacing the top case, which includes the battery.
  14. JPack macrumors 601


    Mar 27, 2017
    Great, but how is that relevant to the 2015 model?
  15. vemac575 macrumors regular


    Feb 18, 2018
    If I am understanding him correctly, he is stating that in general, her fixed something under warranty, and sold it off with the new part. Never mind it being a battery.
  16. Miltz macrumors 6502a

    Sep 6, 2013
    New York
    You can always open it up to see if the battery is an original APPLE battery, if so he repaired it and sold it. Good news for you that you have a new battery. If the battery is bootleg, get a refund.
  17. Fishrrman macrumors P6


    Feb 20, 2009

    Some questions:
    Does the MacBook look ok, cosmetically?
    Does it boot right up, get you to the finder without problems?
    Is the display in good shape?
    Have you tried using the free Coconut Battery app to verify the "health" of the battery (by "health" I mean percentage of original capacity)?
    If so, is the state of capacity reasonably close to 100%?
    Does the battery charge properly when you connect the charger?

    If the answers to the above questions are all "yes", my advice is:
    Stop worrying about this.
    It's small potatoes.

    Take it for what it is and enjoy it.
  18. CheesePuff macrumors 6502a

    Sep 3, 2008
    Southwest Florida, USA
    Open up the case and take a look at the battery to see if it looks like an OEM part. For the commenter who said maybe they replaced the battery which includes the top shell and battery, that is not relevant to the 2015 model.
  19. DangerousDave2k thread starter macrumors member

    Jul 11, 2014
    This is what the battery looks like (attached). Could it be aftermarket?

    Attached Files:

  20. BLUEDOG314 macrumors 6502


    Dec 12, 2015
    Looks like a legit battery. Since your model has the ability to run diagnostics remotely, I would call Apple support and ask them to run diagnostics on your machine. Only takes a few minutes. Also ask them to run the power adapter test.
  21. DangerousDave2k thread starter macrumors member

    Jul 11, 2014
    I downloaded CoconutBattery and it's saying the battery was manufactured on 19th Jan 2018, while the machine was manufactured in June 2016 - so I assume this means it isn't the original one. It says the manufacturer is Simplo, which from reading around is indeed a manufacturer of genuine Macbook batteries. Still wondering why the seller has not been up front about the battery being changed. Something is nagging me about this.
  22. iMacDragon macrumors 68000


    Oct 18, 2008
    I can only imagine they had the keyboard or some other part serviced, and didn't know this involved a new battery too.
  23. snaky69 macrumors 603

    Mar 14, 2008
    I'd just be happy it's a brand new battery, but that's me.
  24. Fishrrman macrumors P6


    Feb 20, 2009

    You're making mountains out of molehills.
    You could have bought a used MacBook Pro with an old battery.
    Instead you ended up with a NEW one.
    Why worry about this?
    If "the rest" of the MBP seems ok, I'd be ... pleased...!
  25. Dovahkiing macrumors regular

    Nov 1, 2013
    I would still call it out to the seller. Having a new battery obviously isn't a problem - a dishonest seller is. True, they may just be unaware, but I'd dig deeper.

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