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I can totally answer this question for you. I currently have Macbook Pro,2.16G,Intel Core 2 Duo running 4G of RAM. As someone who has used both adapters, the breakdown goes like this:

The 60w Magsafe adapters are for the Macbooks, the 85w for Macbook Pro. Both are interchangeable. Therefore, a 60w can power a Macbook Pro as well as an 85w can power a Macbook the second they're plugged in.

HOWEVER, if you plug a 60w adapter into a MBP, while it will charge and can be used when plugged in, there's a small catch. To be more precise, the MBP is still usable and the battery will charge just a bit slower than if using the 85w. Why is this,you might be asking? Because the Macbook Pro draws more juice than the Macbook and it's drawing power from a lower watt adapter, hence the need for the 85w. You may see your charge reach and hold between 96% to 99%. If you close it,go in sleep mode or shut it down entirely, that usually charges it to a full 100%.

So yes,you can use either adapter for both. The only thing to keep in mind is if you have a Macbook Pro and are using the 60w,you could risk (in time) overheating your computer as well as doing damage to your battery. The Intel chip is smart enough to stop taking in power to charge but the actual adapter IS NOT. It will still continue sending that current to your machine when in use. Now,you're just slowing cooking your laptop. Will any serious damage happen is you're not using the appropriate adapter? Not really but there have been some a few cases out there of people's machines suddenly shutting down due to overheating and battery health going a bit faster than normal. When I switched from a 60w for my MBP to the 85w, I noticed my machine didn't get nearly as hot and my battery life/cycle actually GOT BETTER (about 7% increase) due to having the proper voltage.

If you have a regular Macbook,either one,supposedly,will be fine. A Macbook Pro,you'll still be OK but keep in mind of the potential quirks when using a lower wattage adapter.

Hope this helps.

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13y ago

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