Removing the coin-cell battery (also called CMOS battery)

The following notes describe information that you must consider when replacing the battery.

To remove the coin-cell battery, complete the following steps:

  1. Read the safety information that begins on Safety and Installation guidelines.
  2. Turn off the server and peripheral devices and disconnect the power cords and all external cables, if necessary.
  3. Remove the top cover (see Removing the top cover).
  4. If necessary, lift the riser-card assembly 2 out of the way (see Removing a riser-card assembly).
  5. Remove the coin-cell battery:
    Figure 1. Coin-cell battery position
    Coin-cell battery position
    1. If there is a rubber cover on the battery holder, use your fingers to lift the battery cover from the battery connector.
    2. Use one finger to tilt the battery horizontally out of its socket, pushing it away from the socket.
      Attention: Neither tilt nor push the battery by using excessive force.
      Figure 2. Coin-cell battery removal
      Coin-cell battery removal
    3. Use your thumb and index finger to lift the battery from the socket.
      Attention: Do not lift the battery by using excessive force. Failing to remove the battery properly may damage the socket on the system board. Any damage to the socket may require replacing the system board.
  6. Dispose of the battery as required by local ordinances or regulations. See the Environmental Notices and User's Guide on the Documentation CD for more information.