MacBook Pro 15" A1321 Battery for Model A1286 (2009-Early 2011)
NewerTech NuPower Battery for MacBook Pro 15", NWTBAP15MBU54RS
Other Hardware Changes - Apple's 2009 MacBook Pro: Battery Life to Die For
A1321 Original Battery for A1286 Apple MacBook Pro 15" (Only for Mid 2009, Early/Late 2010) - WIT Computers
A1322 Original Battery for A1278 Apple MacBook Pro 13 inch 2009 2012, A1322 Battery for Apple MacBook Pro 13 inch A1278 (Mid 2009 – Mid 2012) - WIT Computers
Battery for 2008-2009 MacBook Pro 15-Inch (Unibody)