CAUTION: There is a danger of the new battery exploding if it is
installed incorrectly. Replace the battery only with the same or
equivalent type recommended by the manufacturer. Discard used
batteries according to the manufacturer's instructions.
NOTICE: Before disconnecting a peripheral from the computer or removing a
component from the system board, verify that the standby power light on the
system board has turned off. To locate this light, see "System Board
Components."
Turn off the computer and peripherals, disconnect them from their
electrical outlets, wait at least 5 seconds, and then remove the
computer cover.
Orient the battery with the side labeled "+" facing up (see "Removing the Computer Battery"). Then insert the battery into the socket, and snap it into place.