MacBook Pro cutting out at 30% battery

Discussion in 'MacBook Pro' started by Hogster86, Oct 22, 2016.

  1. Hogster86 macrumors newbie

    Joined:
    Dec 8, 2007
    #1
    Hi all :)

    My 2014 15" MacBook Pro (2.7GHz i7, 16GB RAM) has recently started cutting out completely when the battery reaches about 30% capacity – with no low-battery warning or anything, it just turns off as if you'd disconnected the battery!

    In March this year I had the battery replaced as the previous one was only lasting a few hours at best, and was showing something like 70% health after 600+ cycles.

    The current battery is showing 81% health after 153 cycles so presumably it can't have already lost 30% of its capacity!?

    I've tried resetting the PRAM but that didn't make any difference ... does anyone have any suggestions about what I could do to remedy this problem?

    Many thanks,

    David
     
  2. sinoka56 macrumors regular

    Joined:
    Jun 13, 2013
  3. Murgatroyd314 macrumors regular

    Joined:
    Feb 10, 2012
    #3
    That sounds very much like the symptoms I had on my 2008 MBP, just before the battery started bulging. I'd say you need another replacement.
     
  4. eroslws macrumors 6502

    Joined:
    Aug 18, 2011
    #4
    Have you tried bringing it in to Apple? They might consider your situation a special case even outside of AppleCare. There's no way you need to be replacing your battery twice in two years.
     
  5. Cougarcat macrumors 604

    Joined:
    Sep 19, 2003
    #5
    This happened to my iPhone. You need a new battery.
     
  6. GoodOne macrumors regular

    Joined:
    May 6, 2012
    #6
    I got the same issue on my 2012 rMBP 13. Battery health says it's fine but it just turns off at about 30-40%.

    I'll get it checked once I get my new 2016 rMBP 15.
     
  7. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #7
    Sounds like the symptoms of a bad battery to me.
     
  8. Hogster86 thread starter macrumors newbie

    Joined:
    Dec 8, 2007
    #8
    Thanks for your feedback everyone :)

    I can't believe a 7 month old battery will already have lost 30% of its capacity :(

    Is there any way of 'teaching' / recalibrating the computer so it knows what a full battery and an empty battery looks like? It's as if the computer doesn't realise the battery is reaching a critical voltage until it's too late and so just hard cuts off the power – presumably to prevent damage to the battery?

    I'm aware that batteries degrade over time and that they will slowly lose their capacity, but it's the lack of warning that the laptop is about to shut off that I find annoying ... mainly as it usually cuts off right in the middle of doing something important! That said, losing 30% capacity in 7 months is unacceptable.

    By the way, I've just run a 'Apple Hardware Test' and it came back with no problems ...

    I'm currently running 10.10.5, but the next available update seems to be 10.12 which I don't want to upgrade to until it's been around for a good while and I'm confident all my programs will be fully compatible. Is there a way to upgrade to the final version of 10.11 in case this problem is software related?

    Many thanks for your help [​IMG]


    David
     
  9. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #9
    Assuming Apple replaced it they will replace it again, it sounds like one or two of the battery cells have gone it happens occasionally, that's batteries for you.
     
  10. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #10
    Have you contacted Apple to get a replacement?

    I think first and foremost you should not have something that dies like that.
     
  11. Hogster86 thread starter macrumors newbie

    Joined:
    Dec 8, 2007
    #11
    Hi Samuel,

    Thanks for your reply. Unfortunately I used a local IT technical support company to do the replacement (having sourced the part from VIS) as I imagined it would save me some money ... it seems that might not be the case now :(

    Many thanks,

    David
     
  12. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #12
    Ah yeah third party parts can be a bit rubbish especially batteries, these board should are full of posts about third party batteries only lasting a few months.
     
  13. Hogster86 thread starter macrumors newbie

    Joined:
    Dec 8, 2007
    #13
    The battery was a genuine Apple product though, sourced from VIS, so I would have hoped it would last at least as long as the original battery :(

    Many thanks,

    David
     
  14. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #14
    There are many reports of third party batteries being very poor, and so having the issues you report are not surprising (sadly)
     
  15. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #15
    Yeah I followed your link, I suppose it depends how much you trust this company. Recently Apple did a study of genuine Apple products on Amazon 90% of them were just knock offs.

    But yeah this can happen to batteries at any time it's not about lasting it's about bad luck, I had it happen to an iPhone 5 it just lost access to some of the battery cells.
     
  16. Hogster86 thread starter macrumors newbie

    Joined:
    Dec 8, 2007
    #16
    Very true, batteries are temperamental things at the best of times ... as Samsung have found out to their cost – at least my MacBook hasn't caught fire! ;)

    Many thanks for your support all!

    David
     
  17. Woodcrest64 macrumors 65816

    Woodcrest64

    Joined:
    Aug 14, 2006
    #17
    Hi Hogster, I will let you know my 2012 Macbook Pro Retina had the same issue even after a battery replacement. Back in June of this year I replaced my battery in my 2012 Macbook 15" Retina because it too was shutting off between 20-40%. I replaced it but I had the same problem with new battery but shutting off between 5 to 12%.

    I tried the SMC and PRAM with both the original battery and the new battery. I tried disconnecting the battery too.

    I also tried draining the battery from 100% to when ever it would spontaneously shut off then charging it back up after 5 hours of it being dead and not touching it. That was not successful either.

    So I contacted iFixit where I got the new battery and they gave me these instructions and now my problems seem to have been fixed as of the last 2 days.

    My battery with 58 cycles will drain to 0% and I also get the low battery warning too.

    What's odd is I did the SMC and PRAM reset before with the old battery and the new battery with no success.

    However two things I did not do previously, which may be why it worked this time, is the 'First Aid' treatment to the disk, and doing SMC with the PRAM one after the other. I also installed Coconut battery and ran activity monitor as per instructions below from iFIXIT.

    I also, uninstalled 'battery logger' which I was using prior to coconut battery. I removed Apple's battery bar from the menu bar under Energy Saver in settings. I just did these two additional things as a side precaution.

    Anyway read below and try the following out.

    NOTE: Do the SMC and right after do the PRAM reset. So have your machine OFF, do the SMC, and while the machine is still OFF, do the PRAM next. But before you do any those, do the FIRST AID treatment under disk utility for your Mac's SSD.

    I hope this helps because there are many people here who have had this issue and there doesn't appear to be one solution. Some have gone through multiple batteries, logic boards, AC adapters, and etc to fix this problem.

    Read the email below from iFixit:


    ******************************************
    Thanks for your order.

    I'm sorry to hear about the trouble. I'm here to help! What was the original reason for the replacement and does the issue go away with the original battery reinstalled? Additionally, what version of MacOS are you running?

    The good news is that we tested that battery in our bench, so it has the potential to be a well behaving battery. But, it just needs a swift kick.

    To see if we can't get you up and running sooner than later, please try all of the following for me (even if you have done some of them already) in this order:
    Please Note: For an extended version of these instructions please checkout our Basic Maintenance page that may help eliminate the issues with your battery, and are just plain good practice for any Mac.

    Please let me know if this was able to fix the issue. Please note that it may take 2-3 days before any behavior changes are visible.

    If the above steps do not fix the issue, please reply with the following screenshots:
    • Screenshot 1: Run CoconutBattery for me and send me a screenshot of the results.
    • Screenshot 2: Open Activity Monitor and go to the Energy Tab, then take a screenshot after 1 full discharge (100% to 10%) of routine use. You'll need to leave Activity Monitor open for the entire time the computer is discharging from 100% to 10% so Activity Monitor can accurately log energy use for the full duration of the discharge.
     
  18. Hogster86 thread starter macrumors newbie

    Joined:
    Dec 8, 2007
    #18
    Oh wow, thank you so much for sharing this information Woodcrest64! I will go through these steps in detail and let you know if anything changes.

    Thanks again,

    David :)
     
  19. Woodcrest64 macrumors 65816

    Woodcrest64

    Joined:
    Aug 14, 2006
    #19
    Also David, when I did the SMC and PRAM reset my battery was at 100% for at least two hours. When I did the PRAM and SMC reset with my old battery I was doing it when the battery was dead. So maybe this was another factor in my success. You will need your AC adapter plugged into your Macbook when do the SMC and PRAM reset.
     
  20. Woodcrest64 macrumors 65816

    Woodcrest64

    Joined:
    Aug 14, 2006
    #20
    Hey David,

    Just checking to see if you were able to resolve your Macbook Pro's battery.
     
  21. erich.j.k macrumors member

    erich.j.k

    Joined:
    Aug 10, 2016
    Location:
    Germany
    #21
    Thank you for sharing this since I'm having a similar issue. I replaced my battery with an Apple Original in July (this year). Ever since then the notebook (MacBook Pro early 2011) will shut down without a warning when the battery is at 7%.
    I just tried what you wrote and hope it may help.

    In a later post you mentioned that your battery was at a hundred percent before doing this. Hm, mines currently at 25% so I might have to repeat the procedure once it's charged completely.

    I'll post my experiences...
     
  22. erich.j.k macrumors member

    erich.j.k

    Joined:
    Aug 10, 2016
    Location:
    Germany
    #22
    1st try didn't work. I'll let the mbp charge overnight (turned off) and repeat the procedure.

    Another thing I noticed: I hadn't used coconutBattery in a long time and now that I installed it, I see that it says my current battery has a capacity of 7332 mAh as opposed to the design capacity of 6900 mAh. Could this be an issue?
     
  23. Woodcrest64 macrumors 65816

    Woodcrest64

    Joined:
    Aug 14, 2006
    #23
    Yeah, I think that 'may' be an issue. I have some bad news though. My Macbook Pro is back is shutting off again between 5-7%. My battery shows the same thing with the capacity of 9220mah and the design being 8450mah. Now its quite common to get batteries with higher capacities but I fear yours and mine may be too far off for the system to properly work with. I'm tempted to bring my machine into a Apple specialist. It is out of warranty.

    I've tried another power adapter too but that did not help. There may be something that a Apple tech can do to reset something beyond a SMC or PRAM reset. I say this because I've seen online posts of this issue where owners have brought their Macbook in and had something done behind the scenes without having the logic board replaced to fix the issue.

    Apple techs have access to a unique diagnostics tool via internal network. They plug into your machine a ethernet cable and run this tool from another Mac. Its completely different that the hardware diagnostic tool that's built into the machine called AHT (apple hardware test). I've used this built in tool but it does not come up with any issues or problems.


    The last resort is to replace the logic board but at the age of my computer, its simply isn't worth it at around $900 U.S. dollars :(
     
  24. Woodcrest64 macrumors 65816

    Woodcrest64

    Joined:
    Aug 14, 2006
    #24
    Update: I drained my battery yesterday at 11:00am and left it completely discharged (where it would not turn on) for 24 hours. I then plugged in and charged it back up to 100%. I then left it at 100% plugged in for 2.5 hours.

    Now, instead of the battery saying its 112% above design capacity its only saying its at 102%. I drained it to 80% and then charged it back to 100%. It still saying its only 100 to 103% above design capacity (Normally it going back up to 110 to 112% above design capacity.
    I'm going to see if I can drain it to 5% and get it to give me a warning. I'm keeping my fingers crossed here. I'm thinking leaving it battery dead for 5 hours wasn't enough. I also did another SMC reset when I plugged the Macbook Pro back in when it was drained dead.
     

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