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MacBook Pro Power Adapter With a MacBook

There are 3 versions of MagSafe power adapters. 45w, 60w & 85w. You can safely use the 85w on any MacBook, the 60w is good for any 13″ and below size MacBook and the 45w is good just for MBA’s. You can use the 60w on a 15″ MBP but it won’t charge the battery, just power the machine unless it’s asleep.

By: karan zy
Category: Computers
: Business
Posted: Dec 06, 2011
Updated: Dec 06, 2011
Views: 136


MacBook Pro Power Adapter With a MacBook

There are 3 versions of MagSafe power adapters. 45w, 60w & 85w. You can safely use the 85w on any MacBook, the 60w is good for any 13″ and below size MacBook and the 45w is good just for MBA’s. You can use the 60w on a 15″ MBP but it won’t charge the battery, just power the machine unless it’s asleep.The MacBook uses a 60 Watt power adapter and the power adapter they sold me was actually the 85 Watt MacBook Pro power adapter. Despite reading that it was unlikely to cause any harm, I was a little hesitant to actually use the thing.

Both power adapters have the input and output levels printed on them in small print. The 60W MacBook power adapter shows output levels of 16.5V – 3.65A. The 85W MacBook Pro adapter shows output levels of both 18.5V – 4.6A and 16.5V – 3.65A. There is no switch that I can see, so it must auto-sense the proper voltage.Now, before you start plugging random MagSafe cords into random laptops, you’ll want to check the voltage and wattage on the MagSafe adapter itself.

Of course if you can, you should be using a power adapter that is the proper wattage for your MacBook/Pro, but according to Apple you can use a MagSafe adapter with higher wattage without incident; meaning you can use an 85W MagSafe adapter that is intended for the MacBook Pro 15″ model on a MacBook Pro 13″ model, even though ibook g4 battery is adapter is 60W. Y The reason to check is to be sure it’ll power the machine, as lower wattage MagSafe adapters like those for the MacBook Air will not power a MacBook Pro.

ou can not use a lower watt adapter on a machine that requires higher wattage however (although some real world experience suggests dell Inspiron 6000 battery will work to power the machine, it just won’t charge the battery, but YMMV). The only thing I can’t confirm is whether it will damage a MacBook Pro to use a 60W (or even the 45W made for the MacBook Air). I’ve read on the Apple Discussions forums that a 60W can run a MacBook Pro, but it will not charge the battery. Has to run plugged in all the time.

I prefer the way the new MagSafe adapter looks and how it sits on the MacBook Pro, but a1185 doesn’t break away from the machine as easily as the older MacBook MagSafe adapters do. This limits some of the protection that the MagSafe adapter offers, there have been several times in the past where myself or others have tripped over power cords and only been saved from disaster by the quick break-away magnetic attachment in the MagSafe.



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