Well, it did arrive when they said it would.Took it out of the box, and it did have some life in the battery. OK, so far so good.Took the after-market charger out of the plastic wrap, and plugged it into the wall outlet. Plugged the other end into the Macbook Air...... hmmmm, the Macbook isnt charging. Tried another outlet, still not charging.OK, so now I tried the other Thunderbolt port, and it worked. There was also some case damage around the thunderbolt ports, So I wouldnt call it "excellent condition".And when you spend this kinda $$$, the ports better be working.So it got returned.