Ducati MH900 evoluzione Manuel De L'utilisateur page 106

Charging the batteries (fig. 41)
Before charging the batteries, it is best to remove them
from the motorcycle.
Always disconnect the black negative terminal (-) first,
and then the red positive terminal (+). Unscrew the two
screws (1) that hold the battery brackets (A) to the
battery mounts (B). Lift the batteries off their mounts.
Warning
Batteries develop explosive gases: keep batteries
E
away from heat sources and flames.
Charge the batteries in a well ventilated room.
Connect the battery charger leads to the battery
terminals (red to positive terminal +, black to
negative terminal -).
Important
Make sure the charger is off when you connect the
batteries to it, or you might get sparks at the battery
terminals that could ignite the gases inside the cells.
Always connect the red positive terminal first.
Refit the batteries into their mounts (B), secure them
with the two screws (1) and connect the terminals.
Warning
Keep the batteries out of the reach of children and
away from heat.
Charge the batteries at 1 A for 5-10 hours.
40
B 1
A
-
B
1
A
+
fig. 41