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Install the CMOS battery - CR2032

Use this information to install the CMOS battery - CR2032.


When replacing the lithium battery, use only Lenovo specified part number or an equivalent type battery recommended by the manufacturer. If your system has a module containing a lithium battery, replace it only with the same module type made by the same manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of.

Do not:
  • Throw or immerse into water
  • Heat to more than 100°C (212°F)
  • Repair or disassemble

Dispose of the battery as required by local ordinances or regulations.

The battery is a lithium ion battery. To avoid possible explosion, do not burn the battery. Exchange it only with the approved part. Recycle or discard the battery as instructed by local regulations.

About this task

The following notes describe information that you must consider when you are replacing the CMOS battery - CR2032 in the compute node:
  • You must replace the CMOS battery - CR2032 with a lithium CMOS battery - CR2032 of the same type.

  • After you replace the CMOS battery - CR2032, you must reconfigure the compute node and reset the system date and time.


  1. Follow any special handling and installation instructions that come with the CMOS battery - CR2032.
    Touching the CMOS battery - CR2032 on a metal surface, such as the side of the compute node, when you replace the CMOS battery - CR2032 can cause it to fail.
  2. Locate the CMOS battery - CR2032 socket on the system board. See System-board layout.
  3. Orient the CMOS battery - CR2032 so that the positive (+) side faces toward the memory module slots.
  4. Install the CMOS battery - CR2032.
    1. Pivot the CMOS battery - CR2032 so that you can insert it into the socket.
    2. Slide the CMOS battery - CR2032 in place.
    3. Press the top of the CMOS battery - CR2032 into the socket.
    Figure 1. CMOS battery - CR2032 installation
    CMOS battery - CR2032 installation
  5. If you removed a cover from the battery, install the cover.
After you finish
Reconfigure the compute node and reset the system date and time.
  1. Proceed to complete the parts replacement. See Complete the parts replacement.

Demo video

Watch the procedure on YouTube