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Install the CMOS battery (CR2032)

Use this information to install the CMOS battery (CR2032).

About this task

To avoid potential danger, read and follow the following safety statements.
  • S002
    disconnect all power
    The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
  • S004

    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.

  • S005
    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.
Read the Installation Guidelines to ensure that you work safely.
Make sure to read the following notes carefully before replacing the CMOS battery in the compute node.
  • Do not make CMOS battery in contact with any metal surface during the replacement. Any contact with a metal surface, such as the compute node and enclosure side, can cause damages to the battery.

  • When replacing the battery, you must replace it with another CMOS battery of the exact same type (CR2032) made by the same manufacturer.

  • After you replace the battery, you must reconfigure the solution and reset the system date and time.

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


Figure 1. CMOS battery installation
CMOS battery installation

  1. Follow any special handling and installation instructions that come with the CMOS battery.
  2. Install the new CMOS battery into the compute node.
    1. Orient the battery so that the positive (+) side faces up.
    2. Tilt the battery to insert it into the socket. Make sure that the battery clip holds the battery securely.

After you finish

  1. Reinstall the node front cover into the compute node (see Install the node front cover).

  2. Reinstall the compute node into the enclosure (see Install a compute node in the enclosure).

  3. Check the power LED on each node to make sure it changes from fast blink to slow blink to indicate the node is ready to be powered on.

Demo video

Watch the procedure on YouTube