MBP won't turn on after battery dies

Discussion in 'MacBook Pro' started by SkyBell, Sep 8, 2017.

  1. SkyBell macrumors 604

    SkyBell

    Joined:
    Sep 7, 2006
    Location:
    Texas, unfortunately.
    #1
    I purchased an early 2011 MBP a few months ago, and recently it's been giving me some trouble - if I allow the battery to die, it will not turn back on after I plug it in and charge it up. SMC reset does nothing, nor does holding the power button - however, what I've discovered is, if I open it up and disconnect the battery for a few seconds, then plug it back in, it still won't turn on - until I plug it back in, then it comes right on with the first press of the power button.

    What could be causing this? Bad battery? I try not to let it die now, but I've had to do this whole process three times now (and lost a screw somewhere in the midst of it all) and I'd really like not to have to do it again. Any ideas?
     
  2. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #2
    Disconnect the charger, disconnect the battery, connect the charger and wait. If the machine turns on by itself, probably a battery problem.

    How many cycles on the battery? How is its health?
     
  3. tmt macrumors member

    tmt

    Joined:
    Mar 8, 2009
    #3
    Buy a new battery. I have an early 2011 MBP and it´s a great machine still today.
     
  4. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #4
    Posts 2 and 3 above are "the answer".

    Check the battery's number of cycles.
    Chances are, the number is quite high.
    The battery's getting old -- time for a replacement.

    Go to ifixit.com to see what's involved.
    The process IS NOT difficult, but you do need THE RIGHT TOOLS.
    ifixit sells what you need.

    Personally, I -would not- buy a "cheapo" battery from ebay.
    There is a lot of variation of quality between replacements.
    Expect to spend around $100 for the battery and tools.

    Other "really cheap fix" -- DON'T let the battery die (to begin with).
     
  5. SkyBell thread starter macrumors 604

    SkyBell

    Joined:
    Sep 7, 2006
    Location:
    Texas, unfortunately.
    #5
    Here's a screenshot from CoconutBattery
     

    Attached Files:

  6. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #6
    Re the screenshot above:
    That battery looks fine -- 99% of design capacity.

    But... be careful to get it back on charge before it dies.

    Perhaps the previous owner changed it before selling it.
     
  7. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #7
    Is the Macbook a 13"? The battery in my early 2011 13" has a design capacity of 5770 mAh. There are 1,030 cycles and full charge capacity is down to 4,287 mAh but battery is good. These values are from coconut battery.
     

    Attached Files:

  8. SkyBell thread starter macrumors 604

    SkyBell

    Joined:
    Sep 7, 2006
    Location:
    Texas, unfortunately.
    #8
    Yeah, it's a 13". It appears that indeed the battery was changed before I purchased the machine - perhaps it's just not playing nice with it anymore? I just wonder why it has suddenly decided to start doing this, when there were no issues at all with the battery dying the first few months I had it.
     
  9. Audit13 macrumors 601

    Audit13

    Joined:
    Apr 19, 2017
    Location:
    Toronto, Ontario, Canada
    #9
    Batteries can be unpredictable and it does appear that the Macbook doesn't have the original battery.
     
  10. tmt macrumors member

    tmt

    Joined:
    Mar 8, 2009
    #10
    I changed my battery a year and a half ago, bought from eBay, and my capacity is the same as Audit13 has and working swell.
    The battery is obviously changed but not to the same specs. Don´t know if this is the problem, but it can´t be helping.
     
  11. MacInTO macrumors 65816

    MacInTO

    Joined:
    Apr 25, 2005
    Location:
    Canada, eh!
    #11
    You've got a crappy after market battery in your MBP. The manufacture date of the battery is 2016-12-10.

    Your solution is probably not to let the battery totally discharge or get a different battery.
     

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10 September 8, 2017