HP EliteOne 800 G2 Hardware Reference Manual page 57

15. To insert the new battery, slide one edge of the replacement battery under the holder's lip with the
positive side up. Push the other edge down until the clamp snaps over the other edge of the battery (2).
16. Be sure that the cables around the electromagnetic interference shield are out of the way and will not
be pinched by the EMI shield.
Replacing the RTC Battery 49