IBM RS6000 Service Guide - Page 248

4. Use one finger to slightly slide the battery toward the front of the server. (The spring mechanism behind the battery pushes it out toward you as you slide it forward.) Use your thumb and index finger to hold the battery as it pushes out of the socket. Replacement Tilt the battery so that you can insert it into the front of the socket. As you slide the battery toward the front of the server, push it down into the socket. Notes: 1. Be sure to tell the customer that the time and date need to be reset. If running AIX the bootlist command may have to be run from AIX while logged in as root, this would restore the custom boot list and allow the option of Select Software under multiboot to start the operating system. Other parameters that may have to be rebuilt are the IP parameters. 6-40 Service Guide