HP N09325-001 RTC/CMOS battery is the replacement component identified for the HP Z2 Mini. It powers the workstation’s real-time clock when the computer is disconnected from AC power, helping the clock keep running while unplugged.
For the HP Z2 Mini G9, the service guide identifies a lithium battery and specifies the HP spare part designated for the product. A cable connects the battery to the system board; the documented replacement procedure disconnects it before removing the battery.
Removing or replacing this RTC battery clears CMOS settings.