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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
Amazon.com: iProPower A1382 Battery for MacBook Pro A1286 15" inch Laptop [Only for Early 2011, Late 2011, Mid 2012 Version] High Capacity 7200mAh 10.95V/77.5Wh Replacement Battery : Electronics
Amazon.com: DMKAOLLK A1322 Laptop Battery for MacBook Pro 13 inch A1278 (Mid 2009 2010 Early 2011 Late 2011 Mid 2012 Version) MB990LL/A MB991LL/A MC375LL/A MD314LL/A MC724LL/A - 12 Months Warranty : Electronics
Best Buy: Apple MacBook Pro 13.3-inch 500GB Intel Core i5 Dual-Core Laptop (MD101LL/A) Mid-2012 Pre-Owned Silver A1278