Barely used, the Apple Store folks recommended this battery after I was not satisfied with the Mac brand battery. I bought this one thinking I had a bad battery but it was the logic board. Apple replaced my old MBP so I have no use for this battery. Bought new for $115.00 plus tax and shipping. Willing to sell for $80 plus shipping. I used the battery for a total of a day or two. Maybe has 4-10 cycles tops.
http://store.fastmac.com/product_info.php?products_id=3
Here is the battery, do some research, best aftermarket MBP battery on the market.
http://store.fastmac.com/product_info.php?products_id=3
Here is the battery, do some research, best aftermarket MBP battery on the market.