Power (Watts) Operating MacBook

Discussion in 'Mac Basics and Help' started by tabsgran2, Apr 9, 2008.

  1. tabsgran2 macrumors newbie

    Joined:
    Apr 9, 2008
    Location:
    Sugar Land, TX
    #1
    I travel in a small RV and use 2 MacBooks with 115V AC from an inverter. How would I estimate the power usage for an open MacBook. I'm not sure of the current (I, amps) to calculate.
     
  2. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #2
    60 W / 120 VAC = 0.5 A

    At least the power adapter states 60 Watts. I thought it was 65.

    Edit: It says 1.5 A on the power adapter that I have. Did you take a look at yours?
     
  3. zaney macrumors regular

    Joined:
    Apr 6, 2008
    Location:
    Middle of a field, UK
    #3
    The adaptor can provide UP TO 60W, but I checked mine with a power meter, and when its not charging, and the cpu is idling (i.e. web browsinf, word processing etc) it only uses 12W
     
  4. tabsgran2 thread starter macrumors newbie

    Joined:
    Apr 9, 2008
    Location:
    Sugar Land, TX
    #4
    Power (Watts) Operating MacBook

    Thanks for the prompt reply. Adapter does say 60 Watts but appreciate the measurement @ 15 watts. Looks like no worry with it drawing down my RV battery with extended use while the RV is not plugged in to 115V.
     
  5. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis

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