In addition to the instructions below, you can view a video guide.

1. Unscrew the 10 screws on the bottom of the case.
2. Pull the bottom plate off of the laptop using the joints near the hinges.
3. Near the front lip, there are snaps holding it down. Gently pull from one of the edges to disengage them.
4. Remove the battery by raising one side and detaching it from the system.
5. Attach the new battery to the motherboard and snap it into place.
6. Reattach the bottom cover. Apply pressure around the edges to snap it into place.
7. Replace the screws in the bottom plate.
8. Make sure the edges of the plate are snapped in.
9. Complete!