Stop Macbook from turning off in clamshell mode and unplugged?

Discussion in 'macOS' started by sniffs, Feb 2, 2016.

  1. sniffs macrumors regular

    sniffs

    Joined:
    Jan 24, 2013
    #1
    So it's bad to work all day with your Macbook plugged in and at 100% all day every day.

    Problem is, when the laptop is in clamshell mode and 2 monitors are plugged in and you unplug it, it goes to sleep. There any way to prevent this?
     
  2. JohnDS macrumors 65816

    Joined:
    Oct 25, 2015
  3. sniffs thread starter macrumors regular

    sniffs

    Joined:
    Jan 24, 2013
    #3
    Whoa, thanks man. This app looks to do exactly what I want. I use a Macbook for work and dont like leaving it plugged in all day long sitting at 100%. My previous Macbook pro battery crapped out really early because of that..

    Right now that older Macbook is at 275 charge cycles(max charge cycles is like 900) and it's capacity is 55% of original, so you can see why I really need this app.
     
  4. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #4
    It's not bad for the battery providing you cycle it every now and then.
     
  5. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #5
    That won't hurt your battery at all. If anything, you running the battery down needlessly contributes unnecessary charge cycles and that will reduce battery lifetime.
     
  6. sniffs thread starter macrumors regular

    sniffs

    Joined:
    Jan 24, 2013
    #6
    Hmm.. my 2012 MBP that I basically left plugged while I was at work, now has a charge cycle of 272 and is at 55% capacity. If it's not bad for the battery how can Apple claim their batteries get to 900 charge cycles when mine's not even 1/3rd of that.
     
  7. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #7
    Some of your issue may just be related to battery age also.

    If you read Apple's official information here about batteries, you can see it ays nothing about unplugging when not in use.

    http://support.apple.com/kb/HT1446

    https://www.apple.com/batteries/
     
  8. JohnDS macrumors 65816

    Joined:
    Oct 25, 2015
    #8
    The information may not be being reported accurately. Try resetting the SMC: https://support.apple.com/en-ca/HT201295

    The link above says that is a possible cure for the battery not charging properly.

    Also see: https://www.apple.com/batteries/maximizing-performance/
     
  9. sniffs thread starter macrumors regular

    sniffs

    Joined:
    Jan 24, 2013
    #9
    Just tried resetting the SMC, still showed 55% capacity, tried resetting the SMC again and no dice.

    Oddly enough, when I boot into AHT(booting and pressing D), when I go to "Power" it says

    Capacity: 96%.

    I find that extremely odd to show that. I'm guessing they are using the word "Capacity" to show the overall current charge(Laptop is plugged in and showed it nearly being charged) and not the true capacity. 96% would be extremely awesome to have after 3 years of use which is most likely impossible.
     

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