Hi, Am i right in thinking that it is ok to use the 85w Magsafe from my 15" MacBook Pro with a 13" 2010 MacBook Air?
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
85w magsafe with 13" MacBook Air?
- Thread starter Bez59
- Start date
- Sort by reaction score
Yes you are. The computer will only take as much Watt that it needs.
So it's always OK to use a "stronger" charger. But not the other way.
bobcan
macrumors 6502a
Yup.. You're Good!!
YES indeed, 'Soundcheck' is correct..
The Voltage Output is the same, and the Amperage 'draw' that a larger machine requires may put an adverse stress on a Smaller Sized Charger.. my 2011 15" MBP Adaptor already gets Very Warm some days, so I certainly wouldn't want to see it 'work any harder'..
So, Just DO It!! 😉
YES indeed, 'Soundcheck' is correct..
The Voltage Output is the same, and the Amperage 'draw' that a larger machine requires may put an adverse stress on a Smaller Sized Charger.. my 2011 15" MBP Adaptor already gets Very Warm some days, so I certainly wouldn't want to see it 'work any harder'..
So, Just DO It!! 😉
The smaller wattage charger will work, they will charge much slower and run hotter.
Also, the computer may actually discharge while being plugged in if it is being used to it's full potential, say by gaming.
mrsir2009
macrumors 604
calderone
Cancelled
Negative. Using a lower wattage charger can cause SMC issues. In addition, if the computer is under sufficient load it may not charge at all, instead the power is being used to supply the computer not the battery.
It is inadvisable to use a charger outputting lower wattage than the default charger.
http://support.apple.com/kb/HT2346