Ducati DIAVEL Owner's Manual page 119

Remove the battery (2) from the printed circuit board
(1) and replace it with a new one.
Pay attention to polarity: the positive pole (+) must
face upward.
Important
Only use the required type of battery.
Reinsert the printed circuit board (1) from the side
with the battery (2) into the plastic shell.
118
1
+
2
Fig. 67
2
1
Fig. 68