The battery maintains system time when the server is powered off and a time server is unavailable. If the server fails to maintain the proper time when it is powered off and not connected to a network, replace the battery.
The following figure shows the battery location on the Sun SPARC Enterprise T5140. The Sun SPARC Enterprise T5240 is in a similar location.
Figure 80 Battery Location (Sun SPARC Enterprise T5140 Server Shown)