HP EliteDesk 800 G3 Maintenance And Service Manual page 49

6. Locate the battery and battery holder on the system board.
NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to remove and
replace the battery.
7. Lift the battery out of the holder.
8. Slide the replacement battery into position, positive side up. The battery holder automatically secures
the battery in the proper position.
RTC battery 41