Audi A7 Sportback 2016 Owner's Manual page 232

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Che c king and Fill in g
Battery charging
Starting the engine requires a well charged bat-
tery.
Fig. 193 Engine compartment : connect ors for a charger
and jump start cables
Always read and heed all WARNINGS below
<=:>
&. and
<=:>
&. in Working on the battery on
page 229 .
.,. Switch off the ignition and all electrical con-
sumers .
.,. Make sure the area is well vent ilated when yo u
charge the battery .
.,. Open the engine hood
¢ page 218.
.,. Open the red cove r on the posit ive po le
¢ fig. 193 .
.,. Connect the charger connectors according to
the instructions to the jump start bolts . (Bolts
under the red cover = "positive", Bolts with hex
head= "negative") .
.,. Only now plug the mains lead for the charg ing
equipment into the wall outlet and turn it on
¢
&_.
.,. Make sure the charging rate is not over
30 amps/ 14 .8 Volt.
.,. When the batte ry is fully charged: Turn the
charging equ ipment off and remove the mains
lead from t he wall outlet .
.,. Now remove the clamps for the charging equip-
ment .
.,. Close the red cover on the positive pole.
.,. Close the hood
c::>
page 219 .
A discharged battery can freeze at temperatures
of only 32 F
0
(0 °C). Allow a frozen battery to
thaw completely before attempting to charge it
c:>
&..
However, we recommend not using a
thawed battery again because the batte ry casing
230
can be cracked due to ice formation and can leak
battery acid.
Battery charging (Maximum charging rate of
30 amps / 14.8 Volt )
When charging at
low
voltages (e.g. with a trickle
charge r), the battery cab les do not have to be
disconnected f irst. The battery caps should
not
be opened when charging a battery.
It is not necessa ry to remove the battery from
the luggage compartment,
and it is a lso not nec-
essary to d isconnect the cab les.
Fast charging th e battery (cha rgin g rate
above 14 .8 Vol t s)
For technical reasons do not use a battery charg-
er that uses voltage greater than 14.8 Volts to
charge your vehicle's battery.
A
WARNING
Charging a battery can be dangerous.
- Always follow the operating instructions
provided by the battery charger manufactur-
er when charging your battery .
- Never charge a frozen battery. It may ex-
plode because of gas trapped in the ice . Al-
low a frozen battery to thaw out f irst .
- Do not reuse batteries wh ich were frozen.
The battery housing may have cracked and
weakened when the battery froze.
- Charge the battery in a well ventilated area.
Keep away from open flame or electrical
spark. Do not smoke. Hydrogen gas generat-
ed by the batte ry is explosive.
- To reduce the danger of explosion, never
connect or d isconnect charger cab les wh ile
the charger is operating.
- Fast cha rging a battery is dangerous and
should only be attempted
by a competent
technician with the proper eq uipment .
- Batte ry acid that may spill during charging
should be washed off with a solut ion of
warm wa t er and baking soda to neu t ralize
t he acid.

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S7 sportback 2016

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