Lenovo 7359 - ThinkCentre M58 - 2 GB RAM, Hardware Maintenance Manual

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This section provides instructions on how to replace the battery.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as the parallel-port assignments (configuration). A battery keeps these 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 configuration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
Refer to the “Lithium battery notice” in the ThinkCentre Safety and Warranty Guide for information about
replacing and disposing of the battery.
To replace the battery:
1. Open the computer cover. See “Opening the computer cover” on page 71.
2. Locate the battery. See “Locating parts on the system board” on page 70.
3. Remove the old battery.
Figure 6. Removing the old battery
4. Install a new battery by pushing the new battery straight down until it snaps into position.
Figure 7. Installing a new battery
5. Reconnect all the cables to the system board and close the computer. See “Completing the FRU
replacement” on page 89.
Note: When the computer is turned on for the first time after replacing the battery, an error message
might be displayed. This is normal after replacing the battery.
6. Turn on the computer and all attached devices.
7. Use the Setup Utility program to set the date, time, and any passwords. See Chapter 6 “Using the Setup
Utility program” on page 43.
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ThinkCentre Hardware Maintenance Manual