System Battery; Replacing System Battery - Dell EMC PowerEdge R940 Installation And Service Manual

WARNING: To protect the power supply from electrostatic discharge, the captive screws must be covered with the
rubber cap before inserting the mating connector into the power supply.
3 Rotate the rubber cap clockwise to fix it over the captive screws.
4 Insert the mating connector into the power supply.

System battery

The system battery is used for low-level system functions such as powering the real-time and date settings of the system.

Replacing system battery

Prerequisites
WARNING: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or
equivalent type recommended by the manufacturer. For more information, see the safety information that shipped with your
system.
1 Follow the safety guidelines listed in
2 Follow the procedure listed in
3 Remove the air shroud.
4 If applicable, disconnect the power or data cables from expansion card(s).
5 If applicable, remove the expansion card risers.
6 If applicable, remove the PEM.
Steps
1 Locate the battery socket. For more information, see the System board jumpers and connectors section.
CAUTION: To avoid damage to the battery connector, you must firmly support the connector while installing or
removing a battery.
2 Use a plastic scribe to pry out the system battery as shown in the illustration below.
Figure 90. Removing the system battery
3 To install a new system battery, hold the battery with the positive side facing up and slide it under the securing tabs.
4 Press the battery into the connector until it snaps into place.
Safety instructions.
Before working inside your system.
Installing and removing system components 139