MacBook Pro 13" Unibody Early 2011 Battery Replacement

Remove the following ten screws:

Three 14.4 mm Phillips #00 screws

Three 3.5 mm Phillips #00 screws

Four 3.5 mm shouldered Phillips #00 screws

Use your fingers to pry the lower case away from the body of the MacBook near the vent.

Remove the lower case.

Use the edge of a spudger to pry the battery connector upwards from its socket on the logic board.

Bend the battery cable slightly away from its socket on the logic board so it does not accidentally connect itself while you work.

Remove the following two screws:

One 5.6 mm Tri-point screw

One 13 mm Tri-point screw

Carefully peel the battery warning label off the upper case between the battery and the optical drive.

Use the attached plastic pull tab to remove the battery from the upper case.

Charge it to 100%, and then keep charging it for at least 2 more hours. Next, unplug and use it normally to drain the battery. When you see the low battery warning, save your work, and keep your laptop on until it goes to sleep due to low battery. Wait at least 5 hours, then charge your laptop uninterrupted to 100%.

If you notice any unusual behavior or problems after installing your new battery, you may need to reset your MacBook's SMC.