Battery A1321 661-5211 661-5476 Apple MacBook Pro 15 inch A1321 Mid 2009 Mid 2010 Original - used original spareparts for Macs
A1331 Battery For Apple Macbook Pro Unibody 13" A1342 (late 2009 Mid 2010) Fits 020-6582-a Mc233ll/a Mc207ll/a - Laptop Batteries - AliExpress
A1321 Battery for Mac.Book Pro 15 inch A1286 (Mid 2009 2010 Version) 020-6380-A 020-6766-B 661-5211 661-5476 Laptop Battery - 6 Cells 11.1V 5600mAh - Walmart.com
MacBook Pro (15-inch, Mid 2010) - Technical Specifications
Amazon.com: A1321 A1286 Laptop Battery for MacBook Pro 15" inch (Mid 2009 & 2010 Version) MB985 MB985LL/A MB986 MB986LL/A MB986J/A MC118 MC118LL/A MC373LL/A : Electronics
Amazon.com: DMKAOLLK 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
2010 Macbook Pro 15" A1286 Battery Replacement - YouTube
Amazon.com: A1382 Battery for MacBook Pro 15 inch A1286 Early 2011 Late 2011 Mid 2012 New Replacement Laptop Battery (7200mAh 10.95V/78.84Wh 25 Months Warranty) : Electronics
Gomarty A1321 Laptop Battery for MacBook Pro 15 inch A1286 (Only for Mid 2009, Early/Late 2010) MB985 MB986J/A MC118LL/A MC373LL/A MB986LL/A MC721LL/A MC723LL/A 661-5844 020-7134-A - Newegg.com
A1321 A1286 Battery For Mid 2009 2010 Macbook Pro Battery 15 Inch Apple A1321 020-6380-a 020-6766-b 661-5211 Battery 11.1v - Laptop Batteries - AliExpress