Mercedes-Benz AMG GT 53 4MATIC+ 2019 Operator's Manual page 376

374 Breakdown assistance
apron and a face mask. Immediately
rinse electrolyte or acid splashes off
with clean water. Consult a doctor if
necessary.
Wear safety glasses.
Keep children away.
Observe this Operator's Manual.
Observe the following if you do not intend to use
the vehicle over an extended period of time:
Activate standby mode.
R
Alternatively: connect the battery to a bat‐
R
tery charger approved by Mercedes-Benz or
consult a qualified specialist workshop to
disconnect the battery.
Notes on starting assistance and on charg‐
ing the 12 V battery
Vehicles with a lithium-ion battery
When charging the battery and during starting
assistance, always use the jump-start connec‐
tion point in the engine compartment.
* NOTE Damage to the battery from over‐
voltage
When charging using a battery charger with‐
out a maximum charging voltage, the battery
or the on-board electronics may be damaged.
Only use battery chargers with a maxi‐
#
mum charging voltage of 14.4 V.
All other vehicles
When charging the battery and during starting
assistance, always use the jump-start connec‐
tion point in the engine compartment.
* NOTE Damaging the battery through
overvoltage
When charging using a battery charger with‐
out a maximum charging voltage, the battery
or the vehicle electronics may be damaged.
Only use battery chargers with a maxi‐
#
mum charging voltage of 14.8 V.
& WARNING Risk of explosion from hydro‐
gen gas igniting
A battery generates hydrogen gas during the
charging process. If there is a short circuit or
sparks start to form, there is a danger of the
hydrogen gas igniting.
Make sure that the positive terminal of
#
the connected battery does not come
into contact with vehicle parts.
Never place metal objects or tools on a
#
battery.
When connecting and disconnecting the
#
battery, you must observe the descri‐
bed order for the battery clamps.