Mercedes-Benz A-Class Operator's Manual page 378

376 Breakdown assistance
Comply with safety notes and take protective
measures when handling batteries.
Risk of explosion.
Fire, open flames and smoking are
prohibited when handling the battery.
Avoid creating sparks.
Electrolyte or battery acid is corro‐
sive. Avoid contact with the skin, eyes
or clothing. Wear suitable protective
clothing, in particular gloves, an
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.
If you do not intend to use the vehicle over an
extended period of time:
Activate standby mode, or
R
Connect the battery to a battery charger
R
approved by Mercedes-Benz, or
Consult a qualified specialist workshop to
R
disconnect the battery
Starting assistance and charging the 12 V
battery
When charging the battery and during start‐
#
ing assistance, always use the jump-start
connection 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.