MacBook Pro 15" Unibody Early 2011 Battery Replacement - iFixit Repair Guide
Amazon.com: A1322 A1278 Laptop Battery Compatible with MacBook Pro 13 inch A1278 (Mid 2012 Mid 2010 2009 Early 2011 & Late 2011) MB990LL/A MB991ll/A MC374LL/A MC700LL/A MD313LL/A MD314LL/A : Electronics
ELECBRAiN New Laptop Replacement Battery for A1278 A1322 [MacBook Pro 13 inch] - (Mid 2009, Mid 2010,
Original A1383 Genuine OEM Battery for Apple MacBook Pro 17" A1297 Early 2011 6903690003112 | eBay
iProPower A1382 Battery for Apple MacBook Pro A1286 15" inch Laptop [Only for Early 2011, Late 2011, Mid 2012 Version] High Capacity 7200mAh 10.95V/77.5Wh - Newegg.com
How to Replace the Battery in a 13-inch MacBook Pro 2011 (MacBookPro8,1) - YouTube
MacBook Pro Battery Replacement (Early 2011 to Mid 2012) - YouTube
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
MacBook Pro 15" Unibody Early 2011 Battery Replacement - iFixit Repair Guide
MacBook Pro 13" Unibody Early 2011 Battery Replacement - iFixit Repair Guide
A1382 Battery for Apple MacBook Pro 15" A1286 early 2011 Mid2012 10.95V/77.5Wh | eBay