Remove the CMOS batteries (CR2032)
See this topic to learn how to remove the CMOS batteries.
About this task
To avoid potential danger, make sure to read the following safety information.
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.
Remove the CMOS battery will cause system lockdown. To unlock the system, contact Lenovo Support.
Lenovo has designed this product with user safety in mind. The lithium battery must be handled properly to avoid potential danger. Make sure to follow instructions in this topic while replacing the battery.
- The CMOS battery must be replaced with another unit of the same type (CR2032).
- For high temperature operation environment, it is recommended to use CR2032HR instead.
- After replacement is completed, it is required to reconfigure the server and reset the system date and time.
- Dispose of the battery as required by local ordinances or regulations.
- Make preparations for this task.
- Proceed to the section corresponding to the CMOS battery to be removed:
Remove the security battery
- Remove the fan cage assembly (see Remove the fan cage assembly).
- Gently press on the nub on the side of the CMOS battery as illustrated; then, pivot the battery away from the seat to remove it.Attention
Figure 2. Removing the ThinkShield battery
- Avoid excessive force on the CMOS battery, as it might damage the socket on the system board and result in system board replacement.
- When the security battery is removed, ThinkEdge Security Pack Enabled enters lockdown mode, while activation is required before booting up the system.
Remove the system battery
- Remove PCIe riser 2 (see Remove the PCIe riser assemblies and adapters).
- Open and hold the retaining latch; then, pivot the battery toward the positive (+) side to disengage and remove it from the seat.Figure 3. Removing the system battery