Apple Has Fully Restored Inventory of Mid 2012 and Early 2013 MacBook Pro Batteries - MacRumors
Apple MacBook Pro 15.4" A1286 (Mid 2012) Battery Replacement
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) : Amazon.ca: Electronics
Apple MacBook Pro 13" 15" 17" Battery Replacement 2008 - 2012 Parts & Labour
hardware - Macbook pro 13" mid-2012 not turning on, no battery leds (battery ok) - Ask Different