the server has a 3.6 v lithium battery installed on the main logic board. some signs that you need to replace the battery are intermittent problems starting up the computer and random changes in its date and time settings. you can purchase a replacement battery from the dealer where you bought your server.
1 shut down the server.
be sure to alert users of the server that it will be unavailable for a period of time.
2 unplug the power cord from the back panel of the server. (if the cable-management arm is not attached, you will also have to disconnect cables from the back panel.)
warning there is a risk of explosion if the incorrect type of battery is installed.
warning the only way to disconnect power completely is to unplug the power cord.
make sure that the cord is disconnected before removing or installing any components inside the server.
3 open the server to its full length.
see “opening and closing the server” on page 52 for details.
you can also remove the server from the rack (leaving the cover in place) and do the installation with the server on a sturdy flat surface.
4 locate the battery holder near the back of the server.

5 remove the battery from its holder, noting the orientation of the battery’s positive end. (a plus sign is marked on the holder.)
6 insert the new battery in the holder, making sure the battery’s positive end aligns with the positive symbol on the holder.
7 close the server and tighten the thumbscrews to secure it.
8 reconnect any cords or cables that you disconnected.
important batteries contain chemicals, some of which may be harmful to the environment. please dispose of used batteries according to your local environmental laws and guidelines.