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118 Removing and Installing Parts
Battery
Replacing the Battery
CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your
body before you touch any of your computer’s electronic components. You can do so by touching an unpainted
metal surface on the computer.
A coin-cell battery maintains computer configuration, date, and time information. The battery can last
several years.
If you have to repeatedly reset time and date information after turning on the computer, replace the
battery.
CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or
equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer’s
instructions.
To replace the battery:
1
Enter the system setup program and record the values for all the screens (see "Entering System Setup"
on page 125) so that you can restore the correct settings after installing the new battery.
2
Follow the procedures in "Before You Begin" on page 77.
3
Remove the computer cover (see "Removing the Computer Cover" on page 78).
4
Locate the battery socket (see "System Board Components" on page 81).
NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with
the object. Ensure that the object is inserted between the battery and the socket before you attempt to pry out the
battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the
system board.
5
Remove the battery by carefully prying it out of its socket with your fingers or with a blunt,
nonconducting object, such as a plastic screwdriver.
6
Insert the new battery into the socket with the side labeled "+" facing up, and then snap the battery
into place.