Maserati Ghibli Owner's Manual page 261

We recommend you to have the
battery charge condition checked,
preferably at the beginning of the
cold season, to prevent the electrolyte
from freezing.
This check should be carried out more
frequently if the vehicle is used mainly
for short trips or if it is equipped with
power absorbing devices that remain
permanently on even when the
ignition switch is off. This applies
above all if these devices have been
retrofitted ("Aftermarket" services).
If the vehicle is not used for long
periods of time, please see "Vehicle
Stored for Long Periods" in this
section.
Battery Recharge
The vehicle is equipped with a IBS
(Intelligent Battery Sensor) sensor able
to measure charging and discharging
currents and to calculate the state of
charge and state of health of the
battery. This sensor is located in
correspondence of the negative post
(-) of the battery.
For a successful charge/recharge
operation, the charging current must
flow through the IBS sensor as shown
in the picture.
CAUTION!
• When charging the battery with an
external charger, to allow IBS to
measure charging current, the
negative terminal clamp of the
charger must NOT be connected
directly to the negative post of the
battery, because in this case charging
current does not flow through IBS.
• The negative terminal clamp of the
charger MUST be connected just
after IBS: in this way charging
current flows through IBS, and it can
correctly measure it.
• Do not use a "fast charger" to
provide starting voltage.
Recharge the battery slowly and at a
low amperage with a suitable charger
or use a charge maintainer device (for
further information refer to
Maintenance and Care
"Maintaining Battery Charge" in
chapter "Battery Statement").
It is possible to recharge the battery
without disconnecting the cables of
the vehicle electrical system from it.
• To access the battery lift the ground
coverage of the boot compartment
and remove the access cover as
previously shown.
• Remove the protection cover and
connect the terminal clamp of the
charger positive cable (typically in
red) to the positive post (+) of the
battery.
• Connect the terminal clamp of the
charger negative cable (typically in
black) to the nut located by the
negative post (-) on the battery,
indicated in the picture.
• Turn the charger on and follow the
instructions on its user manual to
completely recharge the battery.
7
259