A generic brand replacement battery for macbook pro 15" aluminum. Only for the replaceable battery version of macbook pros. This is a generic brand, never been used. I bought it as a back up for my mac but I ended up getting a new laptop.

Here's a similar version.
http://www.amazon.com/Techno-Earth%C2%AE-Battery-Apple-MacBook/dp/B003BV2SBE/ref=sr_1_10?ie=UTF8&qid=1315173049&sr=8-10