Macbook 2015 Battery Capacity degrading fast ?

Discussion in 'MacBook' started by DAMNiatx, Jun 14, 2015.

  1. Trixs macrumors regular

    Joined:
    Mar 26, 2008
    #326
    I which my 2016 model looked like that. It's degrading fast :/
     
  2. kiranmk2 macrumors 6502a

    kiranmk2

    Joined:
    Oct 4, 2008
    #327
    So is the consensus that this issue affects both the 2015 and 2016 models? I was thinking about getting a 2016 model refurb, but can wait until the 2017 model comes out and see if they've fixed the issue.
     
  3. viperGTS macrumors 68000

    Joined:
    Nov 15, 2010
    #328
    After about 3 months of getting mine (2016 m3), I have a battery capacity of 95% (actually up from 93% which coconutBattery reported to me back in November). I think you need to give the computer a couple of months of usage to really determine its battery degradation. I think iPhones have this same behavior (quickly dwindling capacity, only to normalize after a couple of months)
     
  4. petterihiisila macrumors member

    Joined:
    Nov 7, 2010
    Location:
    Finland
    #329
    Looking back, buying AppleCare to prepare for the eventual bottom plate replacement on an Early 2015 12" MacBook was a good gamble. The new battery is holding up well after 3 months and 30 cycles.

    I've also been more conscious about keeping the battery between 70 to 100 percent, usually plugged in when stationary. That could have had a positive effect on longevity. I used to drive the original battery low all the time, thinking that a full cycle was somehow good for it. In reality it was just wasting cycles.

    And maybe the new battery, manufactured on 2016-10-26, really is more durable than the first generation. Wouldn't be a surprise, considering how tightly built these terraced battery cells are.

    Early 2015 Macbook battery replacement.jpg
     
  5. kfscoll macrumors 65816

    kfscoll

    Joined:
    Nov 3, 2009
    #330
    What percentage of battery life remaining did your MacBook have to get to before Apple replaced the battery under your AppleCare plan? Mine's generally around 85-86% now and since I'm only about 1.5 years into my AppleCare coverage I figure it'll easily breach 80% within the three years of coverage.
     
  6. polee macrumors 6502a

    polee

    Joined:
    Jul 22, 2008
    #331
    When they replaced he bottom plate, did they have to engrave the serial number of your macbook on to the new plate?
     
  7. kfscoll macrumors 65816

    kfscoll

    Joined:
    Nov 3, 2009
    #332
    ^^
    I'll bet they just replaced the original bottom plate with one that doesn't have a serial number. I'd be gobsmacked if they have the ability to laser etch anything at an Apple Store.
     
  8. JackieInCo Suspended

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #333
    This is what I heard they do. You just have to look up the serial number in the about this Mac menu.
     
  9. Mlrollin91 macrumors G5

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #334
    Keeping your battery between 70-100% all the time will actually cause it to degrade faster. Same with always keeping it plugged in. Batteries need to be used. 20-80% is the optimal zone for Lithium Ion batteries.

    My 2012 MBA has over 1100 cycles and is still above 82% capacity. Original battery form August 2012. Battery was rated for 1000 cycles at 80%.

    My iPhone 7Plus is at 170 cycles and still at 100% capacity.

    I never expose my batteries to heat or cold, never let them drop below 10%. Those are pretty much the only things you need to do to maintain health.
    --- Post Merged, Mar 6, 2017 ---
    I would recommend using your battery more often. 95% after 12 cycles is pretty bad.
     
  10. JackieInCo, Mar 6, 2017
    Last edited: Mar 6, 2017

    JackieInCo Suspended

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #335
    Keeping the MBP plugged in will not harm the battery since the battery only charges once it gets down to about 95% while plugged in. Once it reaches 100%, the charging circuitry turns off.

    Apple is using batteries that are doing some weird things over the last two years. I have a one year old 2012 MBP and a one year old 2015 MBP. Both have around 17 cycles and the capacity on both is about 95%. It seems this is about right for the MBPs over the last few years.

    Also, my 6S+ has 106 cycles on it with 94% capacity, my 6S has 115 cycles, with 95% capacity and my 6+ has 205 cycles with 97% capacity.

    I wouldn't worry about what these battery apps say the capacity is. On all my phones, it fluctuates from 89% to 96% capacity depending on the moons cycle or how I breath on them. Same with the MBPs.

    There's a guy on one of the Android forums who claims that one should never let their battery drop below 40% and never charge it above 70%. That's just nuts. People have crazy ideas when it comes to batteries.
     
  11. Mlrollin91 macrumors G5

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #336
    I'm aware of this. I was saying leaving it plugged in all the time is bad because the battery is not getting used.
     
  12. JackieInCo Suspended

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #337
    This is true. I use mine on battery power about once a month. Neither one of my MBPs leave the house so I really have no need for the battery other than using the computer when there's a power outage a few times a year. I just buy MBPs so that I can use them anywhere in my house easily.
     
  13. petterihiisila macrumors member

    Joined:
    Nov 7, 2010
    Location:
    Finland
    #338
    Mine was around 78 percent. I was waiting for it to drop below 80 before bringing it to service. They did some proprietary tests to confirm it was time for a change.
     
  14. navaira macrumors 68040

    navaira

    Joined:
    May 28, 2015
    Location:
    Amsterdam, Netherlands
    #339
    Screen Shot 2017-03-09 at 17.00.46.png
    I have to say I was extremely upset when I saw battery capacity drop as low as 98% for a moment!!! Give me that 103% I am used to!!! ;)

    (rMBP 2015, bought 8 months ago as you can see)
     
  15. JackieInCo Suspended

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #340
    Mine has stabilized at around 94%. I didn't buy Apple Care for either of my MBPs because I figured if I ever had to replace the battery, it would cost less then Apple Care and it does.

    I didn't but them to take with me, they just stay at home. I mostly wanted the battery power for the few times a year there is a power outage and in the extremely rare possibility I do travel for a vacation or something.
     
  16. thinhpham macrumors newbie

    Joined:
    Jul 27, 2014
    #341
    My MacBook Pro 13" Touch Bar is giving me a crazy weird Battery capacity result. Does anyone know what is going on here?
    Screen Shot 2017-03-12 at 10.23.43 AM.png

    Thanks
     
  17. navaira macrumors 68040

    navaira

    Joined:
    May 28, 2015
    Location:
    Amsterdam, Netherlands
    #342
    I don't see anything weird about it though? Before I saw the screenshot I expected it to fluctuate between 85% and 105% within a week. The capacity measurements are just indicators really. My rMBP started with 103-104% and now after 38 cycles and me owning it for 9 months it's "down" to "only" 100%. But if you look at my screenshot it also goes a bit up and a bit down.
     
  18. objektør macrumors regular

    objektør

    Joined:
    Nov 25, 2014
    Location:
    At home
    #343
    But yours is at 6500mAh while his is at 4200mAh @100%. That is strange.
    I don't have a MBP but a rMB that is at 4200mAh now @82%. Its original capacity was 5300mAh.
     
  19. thinhpham macrumors newbie

    Joined:
    Jul 27, 2014
    #345
    I've seen the capacity dropped quite fast. As you can see on the list, it's 101% on 5/3 but got down to 99% on 10/3. Before that, it took almost 2 months to get down from 102% to 101%. Since then, the capacity is changing like crazy for the last 3 days.

    Mine is 2016 13 inch with Touch Bar, the design capacity is 4315 mAh.
     

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