Mercedes-Benz G-Class Operator's Manual page 304

Battery (vehicle)
302
The jump-starting connection point is in the
engine compartment (
Read the operating instructions for the
X
battery charger.
Open the hood (
X
Connect the battery charger to the positive
X
terminal and ground point in the same
order as when connecting the donor
battery in the jump-starting procedure
( page 303).
Y
page 303).
Y
page 283).
Y