Drastic change in battery capacity in a single day?

Discussion in 'MacBook Pro' started by sk2327, Nov 30, 2015.

  1. sk2327 macrumors newbie


    Nov 30, 2015
    I have used my MBPr (MacBookPro11,1) since 15 months without a glitch, was getting decent battery life,

    updated my OSX to 10.11.2 BETA 4 along with the newer recovery update TWO DAYS ago and since then my mac started to shut down abruptly and randomly at 30% charge, 20% charge. Pressing power key does not help, plugging in boots the system up.

    Now my system report shows:

    Designed Capacity : 6630

    Current Capacity: 2373

    Charge Remaining (mAh): 1194

    Fully Charged: No

    Charging: No

    Full Charge Capacity (mAh): 2373

    Health Information:

    Cycle Count: 424

    Condition: Normal

    Battery Installed: Yes

    Amperage (mA): -549

    Voltage (mV): 1174

    As you can see i have only got 424 cycles on my battery, i do not understand the sudden problem it has got.


    Battery life previously: 7hrs on average

    Battery life now : 3 hrs

    I have tried jumping back to OSX 10.11.1, but no gain, i will be trying to wipe the drive and reinstall OSX 10.11.1 along with the recovery.

    Any help and suggestions in this direction will be highly appreciated.

    Charge Inform

    MacBook Pro with Retina display, OS X El Capitan (10.11.1)
  2. keysofanxiety macrumors G3


    Nov 23, 2011
    If you've still got AppleCare, they now warrant batteries beyond 1 year, so go back to Apple and they'll replace the battery.

    Definitely hardware.

    EDIT: what am I saying, let's go through the obvious bits first. SMC reset/PRAM reset -- any better?
  3. sk2327 thread starter macrumors newbie


    Nov 30, 2015
    No nothing helpful, and unfortunately i did not get the apple care.
    Cant it be related to SMC update or something, cause it only happened just after OSX update.
  4. MagicBoy macrumors 68040


    May 28, 2006
    Manchester, UK
    Most likely a cell has gone faulty and it's just a co-incidence.

    Go talk to Apple, ask them politely if they can help you.
  5. T5BRICK macrumors G3


    Aug 3, 2006
    That is a pretty common symptom of a bad battery. The fact that it failed right after an OS update is just a coincidence.
  6. sk2327 thread starter macrumors newbie


    Nov 30, 2015
    Thanks for all your help, appreciate it.
    Was a bit unlucky this time.

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