Support Battery - Volvo XC90 Owner's Manual

Support battery

Cars with Start/Stop function, in addition to the
starter battery, are equipped with a support bat-
tery.
Cars with the Start/Stop function are equipped
with two 12 V batteries - one extra powerful
starter battery for starting and one support bat-
tery that helps during the Start/Stop function's
starting sequence.
The support battery is located in a box next to the strut
tower.
The following table shows specifications for the
support battery.
Absorbed Glass Mat.
15
Voltage (V)
A B
Cold start capacity - CCA
(A)
Size , L×W×H (mm)
Capacity (Ah)
A According to EN standard.
B Cold Cranking Amperes.
IMPORTANT
When replacing the starter battery or support
battery, in cars with Start/Stop function, a
15
battery of AGM type must be fitted.
NOTE
•
The higher the current take-off in the car,
the more the alternator must be working
and the batteries charging = Increased
fuel consumption.
•
When the capacity of the starter battery
has fallen below the lowest permissible
level then the Start/Stop function is dis-
engaged.
Temporarily reduced Start/Stop function due to
high current take-off means:
•
The engine auto-starts without the driver lift-
12
ing his/her foot from the foot brake pedal.
The support battery normally requires no more
170
service than the normal starter battery. A work-
shop should be contacted in the event of ques-
150×90×130
tions or problems - an authorised Volvo workshop
is recommended.
10
IMPORTANT
If the following instruction is not observed
then the Start/Stop function may temporarily
cease to work after the connection of an
external starter battery or battery charger:
•
The negative battery terminal on the car's
starter battery must never be used for
connecting an external starter battery or
battery charger - only the car's negative
charging point may be used as the
grounding point.
MAINTENANCE AND SERVICE
487