Usually there are two kinds method of removing and install the Apple Macbook battery as their design.
Learn how to correctly remove or install a in your MacBook portable computer.
WARNING: The internal components of your MacBook Pro battery can be warm. If you have been using your MacBook, wait 10 minutes after shutting down to let the internal components cool before continuing.
1. Remove and install apple macbook pro battery
Removing the battery:
Shut down the computer. Disconnect any cords connected to the computer.
Turn the computer over.
Locate the access door latch.
Push down to release the latch, this sets it in the open position, and remove the Apple A1175 access door that covers the battery.
With the latch still in its open position, gently pull up on the battery tab to remove the Apple A1185 battery .
Note: The latch must be in its released, open position to remove or replace the battery and access door.
To replace the battery, make sure the latch is in its open position.
Hold the battery at an angle and slide the lipped edge of the battery below the brackets on the outside edge of the battery bay. Gently press the battery down.
To replace the access door:
Line the access door up with the bottom case and the tabs in the battery bay.