Power Adapter for 17" MacBook Pro 2.8GHz (Mid 2009)

I'm curious to know if i can use a power adapter from an older 17" MacBook Pro 2.4GHz (Mid/Late 2007) with a brand new 17" MacBook Pro 2.8GHz (Mid 2009). Both are 85w i believe - but i wasn't sure about the new battery with this new computer.
Thanks

i would like to say, power adapters are of no tricks. They just provide voltage, current, and also the quality of them. When i say quality, it means how stable they can provide. All good functioning power adaptors should have an acceptable quality. So this is not a concern.
Then, what is going on with the "power"? No matter how many watts, there are _*no differences*_. What you have to consider is: unless it cant boot up your system, or it is not capable to charge while you are working (lower watt will just charge slower), or it has some serious problems when you are doing some high energy consuming tasks (like playing 3D games, video converting). Otherwise, the power adaptor is said to be providing enough power, and nothing to be worried about =]

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