Is it safe to leave my MacBook Air plugged in for clamshell mode?

Discussion in 'MacBook Air' started by malloryjones, Nov 30, 2011.

  1. macrumors newbie

    Joined:
    Nov 5, 2011
    #1
    Apple says they "do not recommend" leaving a notebook plugged into mains power all the time.

    But I cannot use my MBA with an external display, external keyboard and trackpad *unless* I specifically put it in clamshell mode AND keep it connected to mains power.

    Presumably, in this configuration, the MBA is constantly charging, which surely contradicts Apple's advice about not keeping it plugged into mains power all the time.

    Does anyone definitively know if running the MBA on mains power is okay for the health of its battery? Is it simply that I should let the battery discharge fully by itself once a month but otherwise hooking it up to mains power does no harm? If so, why does Apple give this misleading advice?
     
  2. macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    It's fine to leave your machine plugged in. Batteries can be replaced.
     
  3. thread starter macrumors newbie

    Joined:
    Nov 5, 2011
    #3
    Well of course, that's a truism. So too, the entire laptop can be replaced but that hardly understands the point.

    The query is how to keep the current battery in optimal condition and not to escalate its degradation.
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    ______________________________________________________
    This should answer most, if not all, of your battery questions:
    Apple Notebook Battery FAQ by GGJstudios
    ______________________________________________________
     
  5. macrumors 68030

    waloshin

    Joined:
    Oct 9, 2008
    Location:
    in my world.
    #5
    Yes.
     
  6. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #6
    I highly recommend that you read the Battery FAQ that simsaladimamba posted. Your battery will not keep charging once fully charged, even if it's plugged in. If you run in clamshell mode, just remember to unplug and run it on battery a few times a week for several hours, so the battery gets exercised.
     
  7. macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #7
    Battery performance is a characteristic of the battery, not how often you exercise it.
     
  8. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #8
    From Apple:
     
  9. macrumors 6502a

    Joined:
    Mar 11, 2011
    #9
    Extremely useful info. Thanks!
     
  10. macrumors 68040

    ntrigue

    Joined:
    Jul 30, 2007
    #10
    I often use clamshell mode so I use every opportunity to exercise the battery when I am mobile. Even if I could plug in at the coffee shop or hotel I will let it go below 70% before plugging in. Often I time tasks based on battery life, "I will work on x until the battery dies" once a month.
     
  11. macrumors 68030

    Joined:
    Jun 19, 2010
    Location:
    Ft Lauderdale
    #11
    My mba goes for months in clamshell mode while I'm between training gigs on the road. It powers a monitor and keyboard and sits closed on the floor. I never turn it off. once a month I run the batt down overnight and recharge.

    works perfect for me - 100% batt life after a year or so...I do the same for my iphone and 2 ipads
     

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