Remove the CMOS battery (CR2032)
Use this procedure to remove the CMOS battery.
The following notes describe information that you must consider when replacing the battery:
- Lenovo has designed this product with your safety in mind. The lithium battery must be handled correctly to avoid possible danger. If you replace the battery, you must adhere to the following instructions.
- 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.
- After you replace the battery, you must reconfigure the server and reset the system date and time.
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.
- 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.
Before removing the CMOS battery:
Turn off the server and peripheral devices and disconnect the power cords and all external cables (see Power off the server).
If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top cover, or remove the server from the rack.
Remove the top cover (see Remove the top cover).
Remove the processor and memory expansion tray and the expansion tray air baffle (see Remove the processor and memory expansion tray).Figure 1. CMOS battery location on the system board
Table 1. CMOS battery 1 CMOS battery (CR2032)
To remove the CMOS battery, complete the following steps:
- Gently push on one side of the battery until it leaves the seat.Figure 2. CMOS battery removal
- Use fingers to pick up the battery.
After removing the CMOS battery, dispose it according to local regulations.