MacBook Pro 15" Unibody (Mid 2009-Mid 2010) Battery - iFixit
Amazon.com: A1321 Battery for Apple MacBook Pro 15" inch A1286 (Only for Mid 2009, Early/Late 2010), fits MC118LL/A MC373LL/A MB986LL/A Series Notebook : Electronics
MacBook Pro A1321 APPLE batteries Replacement ,Substitute APPLE MacBook Pro A1321 laptop battery
Early 2011/Late 2011 MacBook Pro Battery Life Tests: EveryMac.com
Damaged 15-Inch 2015 MacBook Pro Demonstrates Why Apple Initiated Battery Recall Program - MacRumors