I received the batter for my late 2010 in good order. The instructions were easy to follow and the replacement went well. The two tools mentioned are a must - the P5 pentalobe and T5 torx.

My disappointment is that the battery from iFixit is, in fact, not new. No, it has not been used and shows 6700 mAh design capacity. However, Coconut Battery reports the manufacture date of the battery as 12-14-2011 or 1134 days. Also, I am getting 4-6 hours when I expected 5-7. What is the shelf life of an unused battery?

Perhaps iFixit may wish to change the battery description from "Brand New" to "Never Used" and put the manufacture date.

Thanks