hello all. i am considering upgrading from a Macbook Air to the new MacBook Pro with Retina Display.
However, i would first like to know what happens if you plug the new MacBook Pro with Retina Display into the older Air's 45w MagSafe 1 adaptor?
The reason for my question is that I have bought several spare 45w magsafe adaptors and have them in places like my home study, and office desk. this saves me having to pack one up whenever i move location. i am 100% aware that the older ones would need a converter to make them fit.
but the real question is, will the older 45w magsafe adaptor harm the new MacBook Pro with Retina Display? if not, will it power it at all?
i dont mind if it doesn't actually charge the laptop but rather just powers it. could someone please test this and let me know. thanks.
You will not damage your computer using the 45W adaptor. Depending on what you're doing, it simply won't be able to provide enough power to both charge the battery & power the computer. While your computer is off or sleeping, it will charge but slowly. The most that can happen is the adapter fails from heat, after all it is being used for something it was not designed for. Despite my suggestion not to do this, my daughter in law does this regularly & has been doing so for the past 6 months...she got an Air for Christmas & also owns a 15" Pro. If there were any chance of damaging your computer, Apple would design these things so that they could not be interchanged.