Audi A3 Sportback g-tron Owner's Manual page 222

220 Checking and topping up fluids
- Before disconnecting the battery, turn
off the anti-theft alarm system*! Other-
wise the alarm will be triggered .
- When disconnecting the battery from
the vehicle's electrical system, first dis-
connect the minus cable and then the
plus cable.
- Before reconnecting the battery, turn off
all electrical equipment. First connect
the plus cable, then the minus cable. The
battery cables must NOT be connected to
the wrong battery poles - this can cause
an electrical f ire.
- Never charge a frozen or thawed out bat-
tery - risk of explosion and chemical
burns! A battery must be replaced once it
has frozen. When it is discharged the
battery can freeze at temperatures
around 0°C.
- Make sure that tlhe vapour hose is always
attached to the battery.
- Never use a damaged battery- risk of ex-
plosion! Replace a damaged battery im-
mediately.
CD
CAUTION
- Never disconnect the car's battery with
the engine running or with the ignition
turned on, otherwise the electrical sys-
tem or e lectrical. components will be
damaged.
- Do not expose the battery to direct sun-
light over a long period oftime, as the
intense ultraviolet radiation can affect
the battery housing.
- If the car is left standing for long peri-
ods, protect the battery from frost. The
battery will be destroyed if it is allowed
to freeze
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page 220.
Charging the battery
Terminals for charging the battery are fitted
in the engine comportment.
Fig. 225 Engine compartment: Termina ls for jump
leads and battery charger
... Note the warnings
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&.
in Important safety
warnings for handling a car battery on
page 219 and
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... Switch off all electrical equipment. Remove
the ignition key.
... Open the bonnet
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page 213.
"" Open the battery cover.
... Connect the charger cables to the positive
battery terminal(+) and the earth point on
the body (-) (not the negative terminal on
the battery) as specified .
... Now connect the battery charger to the
mains and switch on.
... After charging the battery: switch off the
battery charger and disconnect the mains
cable.
... Now disconnect the charger cables.
... Fold the cover back onto the battery in its
correct position.
... Close the bonnet
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page 213.
When it is discharged the battery can freeze
at temperatures around 0°C. You must not
use a battery which has frozen, even after it
has thawed, because the ice may have cracked
the battery casing and allowed the battery
acid to escape
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& .
Charging the battery
Only use battery chargers with a maximum
charge voltage of 14.8 V (the battery cables
do not have to be disconnected). The battery
must not be opened while you are charging it. ""