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Macbook Air & Pro Power MagSafe Power Adapter
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Mac Enthusiast
Join Date: Mar 2006
Location: Vancouver, BC
Status:
Offline
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We have a variety of Macbook Pros 13" and Airs that move about the house / to-from work. Is it an issue to treat MagSafe Power Adapters as interchangeable - or should one always ensure your 45W is used on your Air and your 60W is used on your Pro?
my thanks
~P
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Mac Elite
Join Date: Dec 2002
Location: Bay Area of San Jose
Status:
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Posting Junkie
Join Date: Mar 2004
Location: UK
Status:
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Its not a problem to switch them around. A 17" MBP will charge pretty slowly from a 45W MBA PSU but it will charge. The MBA will draw only what it needs from a higher rated PSU.
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I have plenty of more important things to do, if only I could bring myself to do them....
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Clinically Insane
Join Date: Nov 1999
Location: 888500128, C3, 2nd soft.
Status:
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Running a MacBook Pro from a 45W MacBook Air power supply WILL overload and overheat the power supply, causing it to eventually shut off.
Just charging it while asleep should be okay, though.
Using a bigger supply for a computer that requires less power is no problem.
I really don't understand why Apple even sells the 60W power supplies anymore.
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Mac Elite
Join Date: Dec 2002
Location: Bay Area of San Jose
Status:
Offline
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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.
From Apple KB
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Posting Junkie
Join Date: Mar 2004
Location: UK
Status:
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Originally Posted by Spheric Harlot
Running a MacBook Pro from a 45W MacBook Air power supply WILL overload and overheat the power supply, causing it to eventually shut off.
I did this last week, it didn't shut off.
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I have plenty of more important things to do, if only I could bring myself to do them....
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Mac Elite
Join Date: Dec 2000
Location: Netherlands
Status:
Offline
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i switch from 85 to 45w models regularly , i own several macbook variants, and except for charging times I don't notice any difference.
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{Animated sigs are not allowed.}
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Mac Elite
Join Date: May 2002
Location: Germany, 51°51´51" N, 9°05´41" E
Status:
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I used my two Tibooks (which have 65 W power bricks out of factory) with an 45 W YoYo power adaptor several times, no problems, no overheating. As others mentioned before, using a higher rated power brick with a less demanding `Book should also be no problem.
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Macintosh Quadra 950, Centris 610, Powermac 6100, iBook dual USB, Powerbook 667 DVI, Powerbook 867 DVI, MacBook Pro early 2011
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Banned
Join Date: Apr 2012
Location: Ventura, CA
Status:
Offline
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I haven't noticed any problems interchanging them either.
I was disappointed that when I got my Air that it had the 45w. I own one of the Quirky Mag Safe cord management things and it wouldn't fit with my new adapter. I had already sold my MBP with its charger.
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