This is the 11" mid 2012, 13" has larger battery -- I was lucky to get 4 hours with os x when I first bought the machine, the battery is now 4 years old and giv

This is the 11" mid 2012, 13" has larger battery -- I was lucky to get 4 hours with os x when I first bought the machine, the battery is now 4 years old and gives me 2:30-3 hours under latest Ubuntu.