Just how much of a drain is Bluetooth?

Discussion in 'MacBook Air' started by thelookingglass, Jul 1, 2013.

  1. thelookingglass macrumors 68000

    Apr 27, 2005
    Maybe the expert electrical engineers (or anyone else qualified to answer the question) can help on this one:

    I plug my 2013 MBA into an external monitor at home, complete with Bluetooth keyboard and mouse. It's a little bit of a pain shutting off Bluetooth everytime I take my MBA on the road, just to conserve battery. How much less battery life should I be expecting if I just leave Bluetooth on the whole time? Would it be a significant hit?
  2. coldjeanzzz macrumors 6502a

    Nov 4, 2012
    ...Why exactly is it a pain to turn off bluetooth, it takes like a split second to do it from the menu bar
  3. thelookingglass thread starter macrumors 68000

    Apr 27, 2005
    Thanks for your input, but that doesn't answer the question does it? :rolleyes:
  4. Jedi Master macrumors regular

    Apr 5, 2013
    ar the moment on the Death Star
  5. APlotdevice macrumors 68040


    Sep 3, 2011
    If the Bluetooth on a MacBook is optimized like an iPad, the drain should be fairly negligible. (Maybe a few minutes' difference)

    Also, FWIW, I have heard there are scripts and applets that can automatically turn off Bluetooth when you go to battery power.
  6. thelookingglass thread starter macrumors 68000

    Apr 27, 2005
    Thanks for the responses. Very helpful. The only two devices I have connected are a keyboard and mouse. I'd assume if there's no input from either of these devices, that the power draw would be extremely small.
  7. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    I have the same machine and use it just like you do at home. I have tinkered around with BT on vs. off and never noticed any difference at all in battery life either way. I just leave BT on all the time now rather than mess with it.
  8. Chawbaw macrumors newbie

    Oct 16, 2012
    Does anyone else experience wifi issues while Bluetooth is activated?

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