Will Macbook CHARGER work for an OFF MacBook PRO

Discussion in 'MacBook Pro' started by tkjazzer, Feb 18, 2007.

  1. tkjazzer macrumors 6502

    Nov 30, 2004
    Just like the title says.

    Im at the library and I forgot my charger for my macbook pro at home. I have 2 roomates who both have new intel macbooks. There chargers are (I think - please confirm) about 30V less than mine.

    Will, if my macbook is off, my Macbook Pro charge off a macbook charger.

    Also, if I try this, will their charger suffer any damage? Any risk to their charger? does it have a fuse in it?

  2. WildCowboy Administrator/Editor


    Staff Member

    Jan 20, 2005
    It's fine. The charger should charge your MBP even if it's on, unless you're also using it under a very heavy load.
  3. NewSc2 macrumors 65816

    Jun 4, 2005
    New York, NY
    It'll charge even when the MBP is on. The smaller capacity MB charger charges the MBP very slowly, though.
  4. Kamikaze macrumors member

    Oct 28, 2006
    Denver, Colorado
    You'll be fine, been recharging after I use my MB or MBP with the MB charger. I shut it down and plug it in over night. Zero ill effects.
  5. bcavanau macrumors member


    Oct 25, 2006
    Troy, MI
    Should be OK for short term usage.

    I would stress however that you are putting more stress on the Macbook power supply.

    I would guess you are OK for short term usage, but you wouldn't want to use it long term.

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