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

maddog91

macrumors regular
Original poster
Oct 14, 2011
179
0
Trying to sell mine but the buyer wants to know if it will work.
 
Nov 28, 2010
22,684
27
located
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.
 

mopatops

macrumors regular
Jul 21, 2011
159
32
UK
Any macbook air bought in the year 2012 is by definition a macbook air 2012 ... just an "early 2012" ...
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?
 

anirudh

macrumors 6502
Feb 28, 2008
476
0
India
Any macbook air bought in the year 2012 is by definition a macbook air 2012 ... just an "early 2012" ...
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.
 

theSeb

macrumors 604
Aug 10, 2010
6,963
83
Poole, England
Any macbook air bought in the year 2012 is by definition a macbook air 2012 ... just an "early 2012" ...
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.

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by that definition, if i purchase a 2008 mbp today, would that make it a "early 2012 mbp"? Certainly boosts the resale value ;)
:D I laughed
 

johnhurley

macrumors 6502a
Aug 29, 2011
777
52
Any macbook air bought in the year 2012 is by definition a macbook air 2012 ... just an "early 2012" ...
Sorry I was just humoring the person who posted about the 2012 mba charger ... the remark was not intended to be taken too seriously!
 

GekkePrutser

macrumors 6502a
Aug 18, 2005
960
232
Barcelona, Spain
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.
 

macdudesir

macrumors 6502
Jan 16, 2011
357
76
Blacksburg, VA
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.
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.
 
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happylucky

macrumors newbie
Jul 15, 2011
7
0
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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