Can I charge my macbook with my MBP magsafe adaptor?

Discussion in 'MacBook' started by buyusfear, Jan 15, 2009.

  1. buyusfear macrumors 6502

    Dec 30, 2007
    I tried searching, but nothing I found said exactly what I needed to hear.

    I have a macbook that I'm setting up for a friend (blackbook), who forgot to give me his magsafe adaptor. If I need to charge his macbook, can I use my Macbook Pro's (penryn) magsafe, or is that not a good idea?

  2. Tallest Skil macrumors P6

    Tallest Skil

    Aug 13, 2006
    1 Geostationary Tower Plaza
    Yes, but it doesn't work the other way around.
  3. buyusfear thread starter macrumors 6502

    Dec 30, 2007
    So I won't hurt the Blackbook using my MBP's adaptor?

    The last thing I want to do is melt his notebook.:eek:
  4. buyusfear thread starter macrumors 6502

    Dec 30, 2007
  5. Ice-Cube macrumors 6502a


    Jul 27, 2006
    Somewhere over the rainbow
    It does work the other way around. I have always been using the MacBook magsafe with my MBP. Just takes longer to charge thats all.
  6. dvdhsu macrumors 6502a


    Mar 28, 2008
    Palo Alto, CA
    I'm guessing it could also damage the MacBook Pro if you were using while charging.:confused:
  7. Skeletal-dæmon macrumors 6502

    Apr 27, 2008
    Tallest Skil is mostly correct.

    In the short run, you can charge a MB from a MBP adapter with absolutely no problems whatsoever. In the long run, and it had been documented, you can destroy the battery regulatory system that controls how the battery charges and discharges. Thats not to say that will happen, its unlikely, but the risk is there. Its like putting an 8 amp fuse in a 5 amp light. One day the bulb will explode.

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