Can I use a MacBook adaptor on my Pro?

Discussion in 'MacBook Pro' started by CyclerX, Jan 6, 2009.

  1. CyclerX macrumors newbie

    Jan 6, 2009
    I have 3 laptops and I have been using whichever power adapter I have had on hand. Then I noticed there is a difference in size (an upon closer inspection, voltage) between the MacBook adapter and the Pro's adapter.

    I have been doing this for months-- the size difference is minimal; just didn't notice.

    I do not appear to have screwed anything up, so any harm done to either?
  2. kastenbrust macrumors 68030


    Dec 26, 2008
    North Korea
    It doesnt matter your right, but when using the Macbook adapter with the Macbook Pro the battery will charge about 30% slower.
  3. iBookG4user macrumors 604


    Jun 27, 2006
    Seattle, WA
    The MacBook power adapter is less powerful than the MacBook Pro power adapter. The MacBook adapter may be able to power the MacBook Pro but it will take much longer to charge it.
  4. CyclerX thread starter macrumors newbie

    Jan 6, 2009

    Thank you for the affirmations; I have a lot invested in the 3 machines.

    Please note the voltage output listed is different: 16.5V vs. 18.5V

    My concern is using the 18.5V on the MacBook . . . two volts too many?

    The simple answer is, don't use it! But I have the 3 adapters in strategic areas-- bed, couch, exercise machine-- and it's nice not to have to move them around.

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