My girlfriend has a Macbook Air. The power supply is smaller and lighter than the Pro. It has an output of 14.85V and 3.05Amps. My Pro Retina has a power supply that is 20V and 4.25 Amps.
Both supplies have the same Magsafe adapter, so the power supplies seem interchangeable at a physical level, but what would happen if one of us plugs in using each other's adapter?
Could damage result from under-powering my MacBook Pro? (like a brownout)?
Could damage result from over-powering her Air? (like a power surge)?
Will the Macbook Air charge faster with a Pro adapter?