S002 
CAUTION: 
The power-control button on the device and the power switch on the power supply do not turn off the 
electrical current supplied to the device. The device also might have more than one power cord. To 
remove all electrical current from the device, ensure that all power cords are disconnected from the 
power source.
S004 
CAUTION: 
When replacing the lithium battery, use only Lenovo specified part number or an equivalent type 
battery recommended by the manufacturer. If your system has a module containing a lithium battery, 
replace it only with the same module type made by the same manufacturer. The battery contains 
lithium and can explode if not properly used, handled, or disposed of.
Do not: 
•  Throw or immerse into water
•  Heat to more than 100°C (212°F)
•  Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
S005 
CAUTION: 
The battery is a lithium ion battery. To avoid possible explosion, do not burn the battery. Exchange it 
only with the approved part. Recycle or discard the battery as instructed by local regulations. 
About this task
Attention: 
•  Read 
“Safety inspection checklist” on page iv and “Installation guidelines” on page 41 to ensure that you 
work safely.
•  Touch the static-protective package that contains the component to any unpainted metal surface on the 
server; then, remove it from the package and place it on a static-protective surface.
Watch the procedure 
48
ThinkSystem ST50 V2 Maintenance Manual