Major battery use while lid closed

Discussion in 'MacBook Pro' started by Rob.G, May 25, 2014.

  1. Rob.G macrumors 6502


    Jan 17, 2010
    On my new rMBP13, I've noticed that the battery is being drained by something overnight. I tend to close the lid and put it on the shelf next to my bed during the night (unplugged from power). This morning, it was at 34%, after being at 100% when I closed the lid.

    Isn't there a setting someplace to ensure that it goes to sleep when the lid is closed? I've been looking in Prefs but haven't found it. I've never had this problem with previous Mac laptops (four Airs and two 17" MBPs).

  2. AndyK macrumors 65816


    Jan 10, 2008
    Have you enabled Power Nap while on battery power?
  3. Trvlngnrs macrumors 6502


    Jun 8, 2010
  4. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    Like you said, it sounds like it is not going to sleep at all. Try the troubleshooting steps in this Apple support document. Also, try the tips in this article, particularly that assertions command toward the lower part of the page. That will help tell you what is keeping it awake.
  5. wadjj macrumors regular

    May 6, 2012
    Power nap on battery is strongly not recommended, it can't actually guarantee to only run the tasks listed in preferences.
  6. princealyy macrumors regular

    Mar 27, 2011
    I had the same problem, it was due to bootcamp.
    Are you by chance using bootcamp on the laptop? Shut down your virtual device and your mac should go to sleep.
    If this is not the case ... then I am sure there are other option ... :)
  7. maflynn Moderator


    Staff Member

    May 3, 2009
    Are you talking about using virtualization of bootcamp - two different animals. bootcamp you boot into windows, virtualization you run windows within OSX. You're post is a bit conflicting.
  8. happyfrappy macrumors 6502

    Oct 14, 2007
    Location eh?
    Did you leave any USB devices plugged in?
    Some wireless mice/keyboards are known to pickup "RF noise" which the mini-receiver plugged into the Mac/PC will randomly awaken from sleep due to "input" so the system will awake in clamshell mode until sleeping again. Bluetooth on Macs can do the same when a battery is low on the mouse/keyboard--my old BT Mighty Mouse did this.

    ...I had this happen on my 2010 MBP several times until figuring out it was the mouse. I know the Microsoft Wireless Mobile Mouse 4000 suffers the same glitch as Logitech M305/505 (Logitech Unified series doesn't have this issue)

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