MacBook Pro adapter works with MacBook Air

Discussion in 'MacBook Air' started by barefeats, Feb 16, 2008.

  1. macrumors 65816


    Jul 6, 2000
    I've confirmed that the 85W power adapter for the MacBook Pro works fine with the MacBook Air even though it ships with a 45W adapter. It will not "over drive" the battery. Ditto for the 65W adapter.

    Caveat: The statement above is based on info from someone with electrical engineering expertise and familiarity with Apple products. However, when I tried out an 85W adapter on our MacBook Air, it got rather warm on the left underside -- subjectively warmer than when using the 45W adapter. We're going to run further tests and actually measure the enclosure bottom using both a temperature probe and Hardware Monitor and report back to you.
  2. macrumors member

    Dec 1, 2007
    Been using Powerbook adapters to power iBooks for years now. Same thing with the 85w powering the Macbook. Nothing new here, but thanks for the tests.
  3. macrumors 6502

    Dec 11, 2007
    Good post... I have been doing this since I bought my MBA. In my office at work I have a Griffin Elevator (the stand that makes your laptop eye-level) on my desk for my MBP. I gave it a shot to see if the power brick would work with my MBA and luckily it did. Only problem is that the angle of the MBP adapter is not like the MBA. It is not a problem if I charge the MBA on the stand, or slightly hanging off the desk.
  4. macrumors regular

    Feb 9, 2008
    the question is...

    does the higher wattage charge reduce the charge time on the MBA?
  5. macrumors 6502a


    Apr 23, 2007
    Does the 85W MBP adapter charge the Macbook any faster?
  6. macrumors 6502


    Sep 25, 2007
    Indiana, USA
    Doesn't the 85W step down? I was thinking I read somewhere that it steps down when the MacBook charges through it. Maybe I'm just dumb :p
  7. macrumors 65816

    Jul 29, 2005
    Same charge time. I do the same thing once in awhile when I forgot my macbook air adaptor.
  8. macrumors 6502a

    Sep 13, 2008
    Warsaw, Poland
  9. macrumors regular

    Feb 5, 2008
    I recently asked an apple technician at the repair centre and and he said to me it doesnt matter. He said the voltage is reduced if you used for example a macbook pro charger on a macbook or macbook air. He said the reason apple doesnt just have one standard charger for all the notebook is because of size issues of the battery pack.

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