New Replacement A1382 Battery for Apple Early 2011 Late 2011 Mid 2012 MacBook Pro 15 inch Laptop Model A1286 Battery MC723LL/A MC721LL/A MD103LL/A MD104LL/A 020-7134-A 661-5844

2011 15-inch MacBook Pro battery replacement remove seven Phillips head screws starting in the top left corner and going around the contour of the macbook these are the shorter screws now remove the three long Phillips head screws those ten screws will release the cover go ahead and lift it and remove it battery removal begin by disconnecting the battery first locate the three pentalobe battery screws the left one is under the tape remove the three pentalobe screws you can now lift up the battery by its tab let's get out of the Sanyal battery installation insert the battery in at an angle and drop it into the socket secure the three pentalobe screws we connect the battery place the cover back install the three long Phillips head screws first starting the top right corner going left now install the seven short Phillips head screws starting at the top left corner and going around the cont