hardware - Macbook pro 13" mid-2012 not turning on, no battery leds (battery ok) - Ask Different
How to replace a 13-inch MacBook Pro battery
Amazon.com: A1322 A1278 Battery for MacBook Pro Battery 13 inch Mid 2012 2010 2009 Early & Late 2011, 661-5557 661-5229 MacBook pro A1278 A1322 Battery [12 Months Warranty] : Electronics