Audi A3 2024 - Charging the 12 Volt Vehicle Battery

Checking and Filling
— Never make modifications to the lithium
battery.
— Never open the 48 volt battery.
Charging the 12 volt vehicle battery
Fig. 141 Engine compartment: connections for the charg-
ing device or the jump start cable (vehicles with battery in
the engine compartment)
Fig. 142 Engine compartment: connections for the charg-
ing device or the jump start cable (vehicles with jump start
connection in the engine compartment)
Observe the safety precautions > page 278, Gen-
eral information, Z\ in Battery general infor-
mation on page 230 and > A\.
Requirement: only use chargers with a maximum.
charging current of 14.8 volts. The battery ca-
bles remain connected.
Depending on the engine, the battery may be lo-
cated in the engine compartment or in the lug-
gage compartment. A jump start connection (+)
is located in the engine compartment for vehicles
with the battery in the luggage compartment.
This jump start connection (+) is used to charge
the battery as well as to jump start the vehicle.
The battery is always charged in the engine com-
partment © page 221, fig. 135. The ground point
© iis always located on the vehicle body.
232
> Switch off the ignition and all electrical equip-
ment.
> Open the hood © page 220.
» Applies to: vehicles with battery in the engine
compartment: Open the cover on the positive
terminal © fig. 147.
> Applies to: vehicles with jump start connection
(+) in the engine compartment: Open the cover
on the positive terminal © fig. 142.
» Clamp the terminal clamps on the charger cor-
rectly onto the positive terminal/jump start
connection @ and the ground point ©.
» Insert the power cable for the charger into the
socket and switch the charger on.
» At the end of the charging process, switch the
charger off and pull the power cable out of the
socket.
» Remove the charger terminal clamps.
> Close the cover on the positive terminal.
> Close the hood © page 220.
— Never use charging equipment that is un-
suitable, visibly damaged, and/or dirty.
Check the charging equipment for damage
before every use.
~ Applies to: vehicles with jump start connec-
tions in the engine compartment: The
charging cable or jump start cable must nev-
er be connected directly to the 12 Volt vehi-
cle battery. Only use the connections in the
engine compartment > page 232.
~A highly explosive mixture of gases can form
when charging batteries. Only charge the
battery in well-ventilated areas.
~A drained battery can freeze at tempera-
tures around 32 °F (0 °C). Do not charge or
use a frozen or thawed battery. If ice forms,
the battery housing can crack and battery
electrolyte fluid can leak, which increases
the risk of an explosion and chemical burns.
Contact an authorized Audi dealer or author-
ized Audi Service Facility for more informa-
tion.
= Do not connect or disconnect the charging
cable while charging because this increases
the risk of an explosion. >
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