A1322 A1278 Laptop Battery Replacement for MacBook Pro 13 inch (2009 2010 2011 2012 Version) fits 661-5229 020-6547-A MB990LL/A MB991ll/A MC374ll/A

2011 MacBook Pro battery replacement begin by shutting down and flipping over your MacBook remove the seven short Phillips head screws starting in the top left and going around the contour of the mag book now the three long Phillips head screws remove the cover disconnect the battery before you begin battery removal remove the two tribe wing battery screws the one on the right is the long one and the one on the left is short lift the battery up at an angle feel bag the tape near the DVD drive battery reinstallation insert the new battery and at an angle and drop it into its socket reinstall the two tribe wing screws the one on the left is short and the one on the right is the long one reconnect the battery reinstall the cover install the three long Phillips head screws first then going around the contour of the mag book installed a seven short Phillips head screws perform an SMC reset a