Audi R8 2009 Owner's Manual page 207

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&
WARNING (continued)
• Make sure the vent hose is always attached to the opening on
the side of the battery.
• Never use batteries which are damaged. Danger of explosion!
Always replace a damaged battery .
&
WARNING
California Proposition 65 Warning:
Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive problems. Wash hands after
handling.
0
Note
Do not disconnect the vehicle battery when the ignition is
switched on or when the engine is running, otherwise, you will
damage electronic components in the electrical system .
If your vehicle is going to stand for a long period of time without
being driven, protect the battery from "freezing", otherwise it will
be damaged and will then have to be replaced. •
Charging
the battery
Starting the engine requires a well charged battery.
- Always read and heed all WARNINGS => &
in "Working
on the battery" on page 204 and=> & .
-
Switch off the ignition and all electrical consumers.
-
Only when "fast charging": Disconnect the two battery
cables (first "negative" , then "positive")
.
-
Connect the clamps of the charger to the battery termi-
nals (red= "positive",
black or brown= "negative")
according to the directions.
-
Only now plug the mains lead for the charging equip -
ment into the wall outlet and turn it on.
- When the battery is fully charged: Turn the charging
equipment off and remove the mains lead from the wall
outlet.
-
Now remove the clamps fo r the charging equipment.
-
Reconnect the cables to the battery (first "positive" , then
"negative").
When charging at low voltages (e.g. with a trickle charger ), the
battery cables do not have to be disconnected first . Before charging
at high voltages, i.e. "fast charging ", you must disconnect both
cables. In either case, follow the instructions from the manufacturer
of the charger .
Fastcharging a battery is dangerous => & in "Working on the
battery" on page 204. It requires special charging equipment and
the knowledge to go with it. We recommend having your battery fast
charged only by a qualified workshop.
A discharged battery can freeze at temperatures of only 32°F (0 °Cl.
Allow a frozen battery to thaw completely before attempting
to
charge it=> & . However, we recommend not using a thawed battery
again because the battery casing can be cracked due to ice forma -
tion and can leak battery acid.
Do not open the battery caps when charging the battery.
&
WARNING
Charging a battery can be dangerous.
Never charge a frozen battery. It may explode because of gas
trapped in the ice. Allow a frozen battery to thaw out first.
.,,,
Vehicle care

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