2009 MacBook power adapter safe for 2011 13" MBP?

Discussion in 'MacBook Pro' started by Nathe, Mar 16, 2011.

  1. Nathe macrumors member

    Joined:
    Feb 25, 2011
    Location:
    Staffordshire, UK
    #1
    Quick question, stupidly left my MBP power adapter at work and it's pretty flat. Will the adapter from my 2009 MacBook charge it safely?
     
  2. mgartner0622 macrumors 65816

    mgartner0622

    Joined:
    Jun 6, 2010
    Location:
    Colorado, USA
    #2
    Yes, as long as it doesnt have exposed wires or something. :eek:
    I'm guessing they are both 65 watt? It should say on the brick.
     
  3. Jmouse macrumors 6502

    Joined:
    Mar 14, 2011
    #3
    Only if they are the same Voltage. If you use a different Output V you can damage the battery life.
     
  4. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #4
    Not true. Using a weaker adapter than the one designed for your MBP will not harm it in any way. It will simply take longer to charge it.
     
  5. makinao macrumors regular

    Joined:
    Dec 27, 2009
    #5
    Your 13" MBP can use any of the three magsafe adaptors currently available. The 85w (which comes with the 15" and 17" models), the 65w (which comes with the 13" models), and even the 45w unit that comes with MBA's will work. I have all three in my household, and I use them alternately with my Macbook White 13". They will not shorten your battery life nor blow up your battery, although the 45w will get hotter under heavy use, and will take longer to charge your battery.
     

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