MacBook Pro 17" Unibody Battery Replacement - iFixit Repair Guide
Amazon.com: Laptop Battery for A1322 A1278 MacBook Pro 13" (Mid 2009, Mid 2010, Early and Late 2011, Mid 2012 Version) Replacement Batteries MB990LL/A MB991ll/A MC374ll/A MC375LL/A MC700ll/A MD101LLA : Electronics
Amazon.com: A1321 A1286 Laptop Battery for MacBook Pro 15 Inch Mid 2009 Mid 2010, Replacement for MacBook Pro Battery A1321 A1286 MC371LL/A MC372LL/A MB985 MB986 MC118 77.5WH : Electronics
Replace your 2009-2012 MacBook Pro HD with an SSD
Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Unibody (Mid 2009 /Mid 2010) - Repair Kit : Electronics
Amazon.com: Vinpera 77.5WH A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009, Mid 2010 Version) MB985LL/A MC118LL/A MC371LL/A MC372LL/A MC373LL/A MB986LL/A MB986J/A MB985 MB986 MC118 661-5211 : Electronics
Amazon.com: 77.5WH Type A1321 Battery Replacement for Apple MacBook Pro 15" inch A1286(Mid 2009 Mid 2010 Version), MB985 MB986J/A MB986CH/A MC118 MB986 661-5211 020-6380-A 020-6766-B : Electronics
Amazon.com: iProPower A1322 Battery Replacement for 13 inch MacBook Pro A1278 2009 2010 2011 2012 Year : Electronics
Amazon.com: NinjaBatt Battery A1278 A1322 for Apple MacBook Pro 13" [Mid 2012 2010 2009 Early 2011 Late 2011] - High Performance [65.7Wh/10.95v] : Electronics