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Remove the CMOS battery (CR2032)

Follow instructions in this section to remove the CMOS battery (CR2032).

About this task

S002
disconnect all power
CAUTION
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
Attention
CAUTION

When replacing the lithium battery, use only Lenovo specified part number or an equivalent type of 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
Attention
CAUTION
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.
Attention
  • Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.
  • Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.
  • Remove any locking device that secures the server, such as a Kensington lock or a padlock.
  • Place the server on its side with the cover up.

Procedure

  1. Make preparation for this task.
    1. Remove the server cover. See Remove the server cover.
      Attention
      The heat sink and processor could be very hot. To avoid burning yourself, wait for a few minutes after turning off the server before you remove the server cover.
  2. Locate the CMOS battery on the system board. See System-board connectors.
  3. Remove the CMOS battery.
    1. Press the battery clip in the direction as shown.
    2. Carefully tilt and lift the CMOS battery out of the socket.
      Note
      Do not lift the battery with excessive force, as it may cause damages to the socket on the system board. Any damage to the socket may require replacing the system board.
      Figure 1. CMOS battery removal
      CMOS battery removal

After you finish

  1. Install a replacement unit. See Install the CMOS battery (CR2032).
    Note
    Make sure to install the CMOS battery before powering on the server. Otherwise, it might cause system abnormality.

  2. Dispose the component with compliance to local regulations.

Demo video

Watch the procedure on YouTube