Removing and replacing the canister CMOS battery

You must replace the canister CMOS battery if the battery fails.

About this task

To replace a canister CMOS battery, complete the following steps:

1. Read the safety precautions in the IBM Systems Safety Notices. These guidelines help you safely work with the system.
2. Remove the canister that contains the faulty battery, as described in Removing and reseating a node canister.
3. To release the battery from its socket, pull the battery’s uppermost edge of the holder away from it, then lift the CMOS battery out of the socket, as shown in the following figure.

   

4. To install the new battery, hold the battery with the positive “+” side that faces the canister battery.
5. Fit the lower edge of the battery into the battery socket, then push the upper edge toward the outside of the canister to seat the battery in the socket.
6. Replace the canister as described in Removing and reseating a node canister.

What to do next

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