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Removing and Replacing the System Battery
The system battery is located on the I/O board assembly. Replace the battery with only an identical
or equivalent battery only. Dispose of used batteries according to the manufacturer’s instructions.
WARNING! Lithium batteries may explode if mistreated. Do not recharge, disassemble, or
dispose of batteries in a fire. Failure to observe this warning can result in personal injury or
damage to equipment.
Removing the System Battery
WARNING! Ensure that the system is powered off and all power sources have been disconnected
from the server prior to performing this procedure.
Voltages are present at various locations within the server whenever an ac power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to
follow ESD safety precautions can result in damage to the server.
IMPORTANT: Before removing the system battery, record all boot and LAN configuration
settings. (Find the settings using the INFO ALL EFI command.) You must reset these values after
replacing the battery.
To remove and replace the system battery, follow these steps:
1. Power off the server and disconnect the power cables. See “Powering Off the Server”
(page 95).
CAUTION: You must remove the I/O board assembly to service the system battery. The
removal and replacement of the I/O board assembly occurs through the rear of the rack for
rack-installed servers. Carefully follow the removal and replacement procedures; you must
first perform several tasks with the server extended out from the front of the rack. See
“Removing and Replacing the I/O Board Assembly” (page 225) for complete instructions.
2. Remove the I/O board assembly. See “Removing the I/O Board Assembly” (page 225).
3. Locate the system battery on the I/O board assembly (Figure 6-26).
4. Insert a flat tool under the battery and carefully lift upward to pry the battery from the
socket.
230 Removing and Replacing Server Components