Ducati DESERTX Owner's Manual page 270

Attention
NEVER connect the battery in parallel with
that of other vehicles, as this may cause a short
circuit or overheating of the battery.
To maintain the battery charge and use the Ducati-
approved battery charger, proceed as described in
the chapter "Maintaining the battery charge".
When charging is complete, disconnect the battery
charger power cable from the wall outlet, remove the
black clip (5a) from the negative pole (-) and the red
clip (6a) from the positive pole (+).
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