Start Battery - Volvo XC 90 Owner's Manual

Start battery

The vehicle's electrical system is single pole and
uses the body and engine block as conductors.
The start (main) battery is used to power electri-
cal components and systems. However, the
hybrid battery is used to start the gasoline
engine.
The start battery should only be replaced by a
trained and qualified Volvo service technician.
The start battery is an Absorbed Glass Mat
(AGM) 12-volt battery that is dimensioned for
use in vehicles to support electrical systems and
functions and regenerative charging.
The service life of a battery is affected by factors
such as driving conditions/style, the number of
starts, climate, etc. Extreme cold may also further
decrease the battery's starting capacity.
•
Never disconnect the start battery while the
engine is running.
•
Check that the start battery is correctly con-
nected and that the clamps on its terminals
are properly tightened.
WARNING
•
Never expose the battery to open flame
or electric spark.
•
Do not smoke near the battery.
•
Battery fluid contains sulfuric acid. Do not
allow battery fluid to contact eyes, skin,
fabrics or painted surfaces. If contact
occurs, flush the affected area immedi-
ately with water. Obtain medical help
immediately if eyes are affected.
WARNING
PROPOSITION 65 WARNING!
Battery posts, terminals, and related accesso-
ries contain lead and lead compounds, chemi-
cals known to the state of California to cause
cancer and reproductive harm. Wash hands
after handling.
If an external auxiliary battery is used to start the
vehicle, use the connection points in the
engine compartment. The start battery's termi-
nals should never be used. See the following
illustration for the location of the connection
points.
MAINTENANCE AND SERVICING
CAUTION
It is not possible to charge another vehicle's
battery using the connection points in the
engine compartment. If the connection points
are used to charge another vehicle's battery,
this may cause a fuse to blow, which means
that the connection points will not function.
Positive connection point
Negative connection point
Only modern battery chargers should be used to
charge the start battery. Quick charge functions
should not be used and could damage the bat-
tery.
If both the start and hybrid batteries are fully dis-
charged, both will have to be charged. Only
charging the hybrid battery in this situation is not
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