Audi Q7 2015 Owner's Manual page 271

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Alwa ys read and heed all WARNING S
be low
¢ A. and
¢ A. in Working on the battery on
page
267.
.,. Turn off the ignit ion and a ll electrical con-
sumers .
.,. Make sure the area is well venti lated when
you charge the battery.
.,. Open the hood ¢
page
256.
.,. Open the red cover on the positive pole
¢ fig. 248 .
.,. Connect the charger connectors accord ing to
the instructions to the
j ump start bolt s.
(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 ¢
A_.
.,. Make sure the charging rate is not over
30 amp s/ 14.8 Volt.
.,. When the battery is fully charged: Turn the
charging equ ipment off and remove the
mai ns lead from the wa ll outlet.
.,. Now
remove the clamps for the charging
equipment.
.,. Close the red cove r on the pos it ive po le.
.,. Close the hood ¢
page
256.
A discharged battery can freeze at tempera-
t ures of only O
0
C.
Allow a frozen batte ry to
thaw comp letely before attempting t o charge
it ¢ & . However, we recommend not using a
thawed battery again because the battery cas-
ing 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
tric kle charger),
the battery cables do not
have to be d isconnected first. The battery
caps should
not
be opened when charging a
battery .
It is not necessary to remove the battery from
the luggage compartment.
Checkin g and fillin g
269
Fast charging th e battery (charging rate
above 14 .8 Volt s)
For technical reasons do not use a battery
charger 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 manu-
facturer when charg ing your battery .
- Never charge a frozen battery.
It
may ex-
plode because of gas trapped in the ice.
Allow a frozen battery to thaw out f irst.
- Do not reuse batteries wh ich were fro-
zen. The battery hous ing may have
cracked and weakened when t he battery
froze.
- Charge the battery in a well ventilated
area. Keep away from open flame or elec-
tr ica l spar k. Do not smoke. Hydrogen gas
genera t ed by the battery is explos ive .
- To reduce the danger of explosion, never
connect or d isconnect charger cab les
while the charger is ope rat ing .
- Fast cha rging a batte ry is dange rous and
should only be att empted by a compe-
tent techn ician wit h the prope r equip-
men t.
- Battery acid tha t may spi ll dur ing cha rg-
ing should be washe d off wit h a solu ti o n
of wa rm water and baking soda to neu -
tralize the acid.
([)
Note
Never use a fast charger as a booster to
star t the engine. This will seriously dam-
age sens it ive e lectronic com ponen t s, such
as contro l units, re lays, radio, etc., as well
as the batte ry charger.

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