Turn off the computer, or enter hibernation mode. Then disconnect the ac adapter and all cables from the computer. NOTE: If you are using a PC Card, the computer may not be able to enter hibernation mode. If this happens, turn off the computer.
Close the computer display, and turn the computer over.
Slide the battery latch to the unlock position (1); then remove the battery (2).
Replacing the battery
Align the end of the spare battery (with the rubber feet) with the edge of the battery space in the computer (3);then gently push the battery into the space (4).
Slide the battery latch to the locked position.
Turn the computer over again. Connect the ac adapter and the cables to the computer.