Amazon.com: DR. BATTERY Replacement Battery for Apple A1278 MacBook Pro 13 inch Mid 2009 Mid 2010 Early 2011 Late 2011 Mid 2012 [10.95V / 70Wh] : Electronics
How to Replace the Battery in a 13-inch MacBook Pro (Mid 2009) MacBookPro5,5 - YouTube
Amazon.com: A1322 A1278 Laptop Battery Replacement for Apple MacBook pro 13 inch Mid 2012 Early 2011 Late 2011 Mid 2010 2009 ; MB990LL/A MB991ll/A MC374ll/A MC375LL/A MC700ll/A MD101LL/A VUOHOEG Laptop Batteries :
Battery A1322 for Apple A1278 (Mid 2009 2010 2011) Unibody MacBook Pro 13'' new | eBay
Internal Replacement Laptop Battery A1322/A1278 Compatible with MacBook Pro 13'' (Mid 2009, Mid 2010, Early 2011, Late - Micro Center
Amazon.com: Easy&Fine Replacement A1322 Laptop Battery for MacBook Pro 13" A1278 Battery (2012 2011 2010 2009 Version),MB990LL/A MB991ll/A MC374ll/A MC375LL/A MC700ll/A MD101LL/A MD102LL/ MacBook pro Mid 2012 : Electronics
MacBook Pro 15" Unibody Battery (A1321) DIY Parts replacement Batteries
MacBook Pro 17" Unibody Battery Replacement - iFixit Repair Guide