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Replacing the battery
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the Safety, Warranty, and Setup Guide that came with your computer. To obtain a copy of the Safety, Warranty, and
Setup Guide, go to:
http://www.lenovo.com/support
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel-port assignments (conguration). A battery keeps this information active when you turn
off the computer.
The battery normally requires no charging or maintenance throughout its life; however, no battery lasts
forever. If the battery fails, the date, time, and conguration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
Refer to the “Lithium coin cell battery notice” in the Safety, Warranty, and Setup Guide for information about
replacing and disposing of the battery.
To replace the battery, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 126.
3. Locate the battery. See “Locating parts on the system board” on page 80.
4. Remove any parts that might prevent your access to the battery. Depending on your computer model,
you might need to remove the PCI Express x16 graphics card for easier access to the battery. See
“Installing or replacing a PCI card” on page 153.
5. Remove the old battery.
Figure 98. Removing the old battery
6. Install a new battery.
Figure 99. Installing a new battery
7. Reinstall the computer cover and connect the cables. See “Completing the parts replacement” on
page 169.
Chapter 10. Replacing FRUs (machine type: 10AQ) 155