SSANGYONG RODIUS 2005.07 Manual page 143

1. DESCRIPTION AND OPERATION OF ENGINE
ELECTRICAL SYSTEM
1) BATTERY
The sealed battery is standard on all cars. There are no vent plugs in the cover. The battery is
completely sealed, except for two small vent holes in the sides.
These vent holes allow the small amount of gas pro-duced in the battery to escape. The battery
has the following advantages over conventional batteries:
-
No water addition for the life of the battery.
- Overcharge protection. If too much voltage is applied to the battery, it will not accept as
much current as a conventional battery. In a conventional battery, the excess voltage will
still try to charge the battery, leading to gassing, which causes liquid loss.
- Not as liable to self-discharge as a conventional battery. This is particularly important when
a battery is left standing for long periods of time.
- More power available in a lighter, smaller case.
The battery has three major functions in the electrical system. First, the battery provides a
source of energy for cranking the engine. Second, the battery acts as a voltage stabilizer for the
electrical system. Finally, the battery can, for a limited time, provide energy when the electrical
demand exceeds the output of the alternator.
2) RATINGS
A battery has two ratings: (1) a reserve capacity rating designated at 27°C
is the time a fully charged battery will provide 25 amperes of current flow at or above 10.5 volts;
(2) a cold cranking amp rating determined under testing at -18°C
the cranking
load capacity.
▶Reserve Capacity
The reserve capacity (RC) is the maximum length of time it is possible to travel at night with the
minimum electrical load and no alternator output. Expressed in minutes, the RC rating is the
time required for a fully charged battery, at a temperature of 27 °C
discharged at
a current of 25 amperes, to reach a terminal voltage of 10.5 volts.
▶Cold Cranking Amperage
The cold cranking amperage test is expressed at a battery temperature of -18°C
The current rating is the minimum amperage, which must be maintained by the battery for 30
seconds at the specified temperature, while meeting a minimum voltage requirement of 7.2
volts. This
rating is a measure of cold cranking capacity.
The battery is not designed to last indefinitely. However, with proper care, the battery will
provide many years of service. If the battery tests well, but fails to perform satisfactorily
in service for no apparent reason, the following factors may point to the cause of the trouble:
08-5
1452-01
(80°F), which
(0°F), which indicates
(80 °F) and being
(0°F).
ENGINE ELECTRIC SYSTEM
RODIUS 2005.07