can a 2012 macbook air charger be used for a 06 macbook?

Discussion in 'MacBook Air' started by maddog91, Jan 2, 2012.

  1. maddog91 macrumors regular

    Oct 14, 2011
    Trying to sell mine but the buyer wants to know if it will work.
  2. simsaladimbamba

    Nov 28, 2010
    Yes. Though the MBA uses a 45 W adapter, while the MB used a 60 W adapter, thus during CPU intensive tasks on the MB, the batter will be also used while the 45 W power adapter is used.
  3. tanhm macrumors regular


    Jun 7, 2011
  4. Trav29 macrumors member

    Sep 17, 2011
    Must be a prototype charger if it's from 2012. I doubt it will work.
  5. anirudh macrumors 6502

    Feb 28, 2008
  6. johnhurley macrumors 6502a


    Aug 29, 2011
    Any macbook air bought in the year 2012 is by definition a macbook air 2012 ... just an "early 2012" ...
  7. mopatops macrumors regular


    Jul 21, 2011
    Not really, the 'early 2012', 'mid 2010' etc. dates refer to the release of that particular model. Any macbook air bought since the refresh would be considered a 'mid 2011'. Including any that were purchased in early 2012. :p

    On topic, I heard that using a lower rated charger would heat up the unit and shorten life span. Is this not the case?
  8. anirudh macrumors 6502

    Feb 28, 2008
    By that definition, if I purchase a 2008 MBP today, would that make it a "Early 2012 MBP"? Certainly boosts the resale value ;)

    The Early 2010, 2011 and so on refers to the product release dates, not the date of purchase.
  9. theSeb macrumors 604


    Aug 10, 2010
    Poole, England
    No it's not. The naming conventions that people adhere to are to refer to a model by when it was released and not when it was bought. Therefore the 2011 MBA is always the 2011 MBA, even when it was bought in 2012. This helps to alleviate confusion.


    :D I laughed
  10. johnhurley macrumors 6502a


    Aug 29, 2011
    Sorry I was just humoring the person who posted about the 2012 mba charger ... the remark was not intended to be taken too seriously!
  11. GekkePrutser macrumors 6502a


    Aug 18, 2005
    In regards to the original question: No this won't work.

    You can use a higher wattage adapter with a Mac laptop but not a lower one. So you can't use the 45W Air adapter on a MacBook which normally needs a 60W adapter.

    From the relevant Apple kBase Article:

    Power adapters for Intel-based Apple portables are available in 45W, 60W, and 85W varieties. Although you should always use the proper wattage adapter for your Apple portable, you can use an adapter of a higher wattage without issue.

    For instance If you have a MacBook (13-inch Late 2009) that normally uses a 60W adapter, you can also use an 85W adapter with that computer. You would not use a 45W adapter with that computer; it would not provide enough power for that MacBook. Using an adapter of higher wattage than the adapter that came with the computer will not cause the computer to charge more quickly or otherwise operate any differently than using the adapter that came with the computer.
  12. macdudesir, Jan 5, 2012
    Last edited: Jan 5, 2012

    macdudesir macrumors 6502

    Jan 16, 2011
    Blacksburg, VA
    You would think if you did that on a macbook pro 13 inch it would keep it from losing battery charge when doing intensive tasks as it does on the original charger...because it has a higher wattage, it should supply more...It probably isn't the case but it would be logical.
  13. happylucky, Jan 5, 2012
    Last edited: Jan 5, 2012

    happylucky macrumors newbie

    Jul 15, 2011
    It all works

    Every magsafe-charger works with every mac with a magsafe-port.

    In my house I have a 2006 MB-charger, a 2010 MBA-charger and a 2011 MBP-charger. I use them on a 2010 MBA and a 2011 MBP. They all work regardless of what they were originally designed for.

    There is, however, a caveat:
    As mentioned earlier in the thread, the MBA-charger is rated at 45 Watts, the MB at 60 Watts, the MBP at 85 (?) Watts.

    Using a low-power charger on a high-power machine might result in the machine not charging while in use. You can still use the machine - it just won't charge. It will most likely display "not charging" in the menu bar. It will however charge when the machine is in sleep mode or turned off.

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