Install the CMOS battery
Use this information to install the CMOS battery.
About this task
The following tips describe information that you must consider when installing the CMOS battery. 
•  Lenovo has designed this product with your safety in mind. The lithium CMOS battery must be handled 
correctly to avoid possible danger. If you replace the CMOS battery, you must adhere to local ordinances 
or regulations for battery disposal. 
•  If you replace the original lithium battery with a heavy-metal battery or a battery with heavy-metal 
components, be aware of the following environmental consideration. Batteries and accumulators that 
contain heavy metals must not be disposed of with normal domestic waste. They will be taken back free 
of charge by the manufacturer, distributor, or representative, to be recycled or disposed of in a proper 
manner.
•  To order replacement batteries, call your support center or business partner. For Lenovo support 
telephone numbers, see 
https://datacentersupport.lenovo.com/supportphonelist for your region support 
details.
Note: After you install the CMOS battery, you must reconfigure the server and reset the system date and 
time.
Attention: 
•  Read “Installation Guidelines” on page 185 to ensure that you work safely.
•  Power off the server and disconnect all power cords for this task.
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.
•  Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static- 
sensitive components in their static-protective packages until installation, and handling these devices with 
an electrostatic-discharge wrist strap or other grounding system.
A video for this task is available at:  
•  Youtube: 
https://www.youtube.com/playlist?list=PLYV5R7hVcs-DqVplE36HIvdM_sq_Auw3U
•  Youku: https://list.youku.com/albumlist/show/id_59643657.html
208 ThinkSystem SR650 V2Maintenance Manual