What's the big charger for?

Discussion in 'MacBook Pro' started by 3lite, Jan 17, 2014.

  1. 3lite macrumors 6502a

    3lite

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    Nov 7, 2011
    #1
    Does anyone even use it? The only thing I use and have seen anyone use is the mag safe charger.
     
  2. GSPice macrumors 68000

    GSPice

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  3. XxLucyxX macrumors newbie

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    UK
    #3

    What big charger are you talking about?
     
  4. MacDawg macrumors P6

    MacDawg

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  5. DeltaMac macrumors 604

    DeltaMac

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  6. GSPice macrumors 68000

    GSPice

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    #6
  7. powerstrokin macrumors 6502a

    powerstrokin

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    May 18, 2013
    #7
    I think OP is talking about the 85 watt charger. It's for 15 and 17 inch MacBooks. The 13 inch MacBook uses a 60 watt charger.

    At least, for the older models such as my mid 2010 MBP.
     
  8. ecschwarz macrumors 65816

    ecschwarz

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    Jun 28, 2010
    #8
    I think so - whenever Apple switched to the L-shaped MagSafe connectors, the 85w brick shrunk to be the same size as the 45w and 60w one, but was still compatible with all MacBooks...that's what I have at home and a 60w that came with my machine in my bag.
     
  9. priitv8, Jan 18, 2014
    Last edited: Jan 18, 2014

    priitv8 macrumors 68020

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    #9
    How did you come to that conclusion?
    My late 2013 85W Magsafe 2 adapter is exactly the same size as the one that came with my Late 2008 model. And they are both larger than 60W adapter that accompanied MacBook and the 45W adapter from MBA is smaller still.
     
  10. laurihoefs macrumors 6502a

    laurihoefs

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    Mar 1, 2013
    #10
    I have a 2006 or 2007 Magsafe 85W adapter, and it is a bit larger than the later ones, or my current Magsafe 2 version. But both are also clearly larger than any 60W or 45W models I've seen.
     
  11. 3lite thread starter macrumors 6502a

    3lite

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    Nov 7, 2011
    #11
    Yeah. What's the point of that?
     
  12. RichardC300 macrumors 65816

    RichardC300

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    #12
    To make the charger longer.
     
  13. Qaanol macrumors 6502a

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    Jun 21, 2010
    #13
    There are three major reasons I use it:

    First, so I can increase the length of the cord.

    Second, so I don’t block multiple outlets on a power strip when the “end” outlet is already taken.

    Third, and most importantly, so I can put the power brick up against my socks to keep my toes warm.
     
  14. simon48 macrumors 65816

    simon48

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    #14
    This is very important! :p
     
  15. Justinhub2003 macrumors regular

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    Cincinnati Oh
    #15
    I do.

    I use it as a stationary cord for my desk which is a decent distance from a plug.

    I'd bet a lot of people would be upset if Apple shipped with such a short cord with no way of extending it.
     
  16. ecschwarz macrumors 65816

    ecschwarz

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    Jun 28, 2010
    #16
    The 85W adapter that shipped with the first few versions of the MacBook Pro was actually rectangle-shaped, looking more like the AirPort Express of that era (still compatible with any original MagSafe-equipped MacBook/MacBook Pro/MacBook Air) or MagSafe 2 machine with an adapter. This changed in mid-2007 when it became square-shaped, like the 60W that was shipping with the plastic MacBooks.

    http://www.engadget.com/2007/07/20/apples-macbookpro-85w-magsafe-adapter-finally-shrunk/

    I will gladly admit my error and ignorance on the size of the bricks - they're rather close, but once I put my machine's 60W and a recently-acquired 85W side-by-side, I realized that there is a slight difference. When I sold my Early 2008 15" MBP and got my current Mid-2012 13" MBP, the change in adapter size was so insignificant that I didn't notice - similarly, the 45W on the Air is just a tad smaller than the 60W - thanks for setting me straight on that!

    http://www.flickr.com/photos/vivitawin/5157026325/
     
  17. PDFierro macrumors 68040

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    Sep 8, 2009
    #17
    I really hope we end up getting an Apple-version of the FINsix adapter. That would be awesome.
     
  18. alphaod macrumors Core

    alphaod

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    Feb 9, 2008
    Location:
    NYC
    #18
    Longer extension cord.

    Also it has a grounding pin. Not much of an issue in the US, but in countries with 200-240V power systems, without a grounding pin, if you touch your Mac's aluminum surface, you'll feel this buzzing sensation. It helps with static discharge (because static electricity can kill your computer) and against electrical surges (can also kill your computer and you).
     
  19. priitv8 macrumors 68020

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    Estonia
    #19
    Strange. We've got a 220V power grid and although the Apple cord is grounded, I know for sure that this grounding is not present in the wiring behind the wall.
    I've never felt any buzzing sensation from any low-voltage (ie those that have power transformers in or at them) home appliances.
     
  20. Cmd-the-World macrumors regular

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    Apr 7, 2010
    #20
    I only experienced this sensation with a 2008 model iMac. It came with the incorrect cable for my country and I had bought an adapter without a grounding pin. Whenever I touched the case and I was barefoot I would feel this sensation. I immediately went and bought a grounded adapter and solved the problem. However like I said that is the only device that I experienced it on. The Aluminium Mac Mini doesn't even have a grounding pin (since it uses a figure of 8 connector) and doesn't show such a problem.
     
  21. priitv8 macrumors 68020

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    Estonia
    #21
    That would mean, that your iMac had the case connected to the live wire and something like this should never happen!
    Most home appliances in EU are double-isolated and bear this sign to identify:
    [​IMG]
    So many are still sold with simple unearthed plugs:
    [​IMG]
     
  22. Sym0 macrumors 6502

    Sym0

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    Jun 6, 2013
    #22
    Anything with metal in it has to be grounded. Otherwise you'll get electrocuted if there is a short to that metal part.
     
  23. snaky69 macrumors 603

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    Mar 14, 2008
    #23
    Reaching a power outlet that is far from wherever you're working.

    Also, that cord actually has a ground plug, which is never a bad thing to have in case of a power surge.
     
  24. laurihoefs macrumors 6502a

    laurihoefs

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    Mar 1, 2013
    #24
    I would not go as far as calling that ignorance :) Like you said, the difference is rather subtle. To be honest, I recalled it being much more noticeable than it actually is!
     
  25. simonsi macrumors 601

    simonsi

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    Jan 3, 2014
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    Auckland
    #25
    Double-insulation is very common in consumer electronics (and has been for 30+years AFAIK), and obviates the need for an earth connection.
     

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