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      Battery removal and installation - ThinkStation D20 (type 4155, 4158, 4218)

      Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkStation Safety and Warranty Guide that came with your computer.

      Your computer has a special type of memory that maintains the date, time, and settings for built-in features, such as serial-port assignments (configuration). 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 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 ThinkStation Safety and Warranty Guide for information about replacing and disposing of the battery.

      To replace the battery:

      1. Turn off the computer and disconnect the power cord from the electrical outlet and from the computer.
      2. Open the computer cover. See "Cover removal".
      3. Access the system board.
      4. Locate the battery. See "Locating parts on the system board".
      5. Remove the old battery.

      Battery removal

      1. Install the new battery.

      Battery installation

      1. Replace any adapter card that was removed. Replace the computer cover and connect the cables. See "Completing the FRU replacement".
        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.
      2. Turn on the computer and all attached devices.
      3. Use the Setup Utility program to set the date and time and any passwords. See "Using the Setup Utility" in the ThinkStation User Guide.
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      • Alias ID: MIGR-72134
      • Document ID: PD009002
      • Last Updated :17 Jun 2014
      • © 2016 Lenovo