This is probably a silly question...but would it be safe to charge my brand new 13" MBA with the charger that came with my 13" MBP? It seems like the charger for the MBP is larger in capacity, which leads me to believe it will charge my MBA faster. I just want to make sure it will not shorten adversely affect the longevity of the battery in my MBA by charging at a higher power. Any insight is greatly appreciated. Thanks.