IBM 6274 - Manual (Page 81)

Chapter 6. Troubleshooting
67
displayed when you turn on the computer. See “Lithium battery notice” on page
viii.
To change the battery, do the following:
1. Turn off the computer and all attached devices.
2. Remove the rear cover. See “Removing the rear cover” on page 37.
3. Remove the old battery 1.
4. Install the new battery.