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CMOS/Clock Lithium Battery
The CMOS/clock lithium battery is located toward the bottom right side of the system board. The
battery may be hidden under installed expansion cards.
When you remove the battery, the system will lose its operating parameters stored in CMOS
memory. As a result, the system BIOS parameter settings are lost. After you install a new battery,
you must reset the date and time and reconfigure the BIOS. See Chapter 7, “Configuring the
BIOS,” for details on using BIOS Setup to configure the BIOS.
To replace the battery:
WARNING
The system is always on when connected to AC power. Before performing this
task, disconnect the system’s power cord from its AC power outlet.
1.
Remove any expansion cards that restrict access to the battery.
2.
Note the positive orientation of the battery. Carefully remove the discharged battery by
grasping it firmly and pulling it out of the socket.
3.
Install the new battery in the same orientation as the old battery.
WARNING
There is a danger of explosion if the battery is incorrectly replaced. Replace
the battery with the same or equivalent type only, as recommended by the
battery manufacturer. Dispose of used batteries according to the battery
manufacturer's instructions.
4.
Install the expansion cards that you removed.
5.
Dispose of the battery according to the manufacturer’s instructions.
Battery
