2018 KIA OPTIMA HYBRID battery

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HEV (HYBRID ELECTRIC VEHICLE) SYSTEM
The Kia Hybrid Electric Vehicle (HEV) uses both the gasoline engine and the electric motor for power. The electric
motor is run by a 270V high-voltage HEV battery.
Depending on the driving conditions, the HEV computer selectively operates between the engine and the electric
motor or even both at the same time.
Fuel efficiency increases when the engine is at idle, or when the vehicle is driven by the electric motor with the HEV
battery.
The HEV battery charge must be maintained for the times when the engine acts as a generator, such as when
stopped at idle. Charging also occurs when decelerating or by regenerative braking.
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PHEV (PLUG-IN ELECTRIC VEHICLE) SYSTEM
The Kia Plug-in Hybrid Electric Vehicle (PHEV) shares the characteristics of both a conventional hybrid electric vehi-
cle and an all-electric vehicle.
When used as a conventional hybrid electric vehicle, the HEV computer selectively operates between the engine and
the electric motor or even both at the same time.
When it is operating in the electric vehicle mode, the vehicle is driven only using the electric motor over a certain dis-
tance until the hybrid battery becomes low. The driving distance in EV mode depends on customer driving style and road
conditions. Aggressive driving maneuvers may at times temporarily enable the engine to operate for maximum power.
The hybrid battery can be fully charged by connecting a plug to an external electric power source.
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Electric Vehicle ModeStart up/Low speedAcceleration High speedDecelerationExternal charging
Electric motor
CD (Charge Depleting) Mode
CS (Charge Sustaining) Mode
Charging
MotorEngine+MotorEngineChargingBattery charging
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Charging Information
• Normal Charger: The plug-inhybrid vehicle is charged by plug-
ging into a normal charger installed
in your home or a public charging
station. (For further details, refer to
the 'Normal Charge'.)
Trickle Charger: The plug-in hybrid vehicle can be charged by using
household electricity. The electrical outlet in your home
must comply with regulations and
can safely accommodate the
Voltage / Current (Amps) / Power
(Watts) ratings specified on the
trickle charge.
Charging Time
Normal Charger: Takes about from
2 and a half hours to 3 hours at
room temperature (Can be charged
to 100%.). Depending on the condition and
durability of the high-voltage bat-
tery, charger specifications, and
ambient temperature, the time
required for charging the high-volt-
age battery may vary.
Trickle Charger: For charging at home. Please note that the Trickle
Charger is slower than the Normal
Charger.
CHARGING THE PLUG-IN HYBRID VEHICLE
Charging Types
An actual charger image and a charging method may vary in accordance with the charger manufacturers.
CategoryCharging Inlet
(Vehicle)Charging ConnectorCharging OutletCharging Method Charging Time
Normal
Charger
Normal charger
installed in homes or
public charging sta-
tions Approximately from 2
and a half hours to 3
hours (to fully charge
the plug-in hybrid
vehicle, 100%)
Trickle
ChargerHousehold current
For charging at home.
Please note that the
Trickle Charger is slow-
er than the Normal
Charger.
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Charging Status
You can monitor the charging status
outside of the vehicle when charging
the high-voltage battery.
Scheduled Charging
(if equipped)
You can set reserved chargingusing the AVN.
Refer to the AVN for detailed infor
mation about setting reserved
charging.
Scheduled charging can only be done when using a normal charger
or the portable charging cable
(ICCB: In-Cable Control Box).
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Charging StatusIndicator
Charging in
progressIlluminates (green)
Fully chargedOff
Scheduled chargingBlinks (green) and then turns off
MalfunctionBlinks (red)

H8 Always keep the charging connec-
tor and charging plug in clean and
dry condition. Be sure to keep the
charging cable in a condition where
there is no water or moisture.
Make sure to use the designated charger for charging the vehicle.
Using any other charger may
cause failure.
Before charging the battery, turn the vehicle OFF.
Be careful not to drop the charging connector. The charging connector
can be damaged.
CHARGING THE PLUG-IN HYBRID VEHICLE (CONT.)
WARNING - Charging
cable
• Immediately stop charging when you find abnormal
symptoms (smell, smoke).
Replace the charging cable if the cable coating is damaged
to prevent electrical shock.
When connecting or removing the charging cable, make sure
to hold the charging connec-
tor handle and charging plug.
If you pull the cable itself
(without using the handle), the
internal wires may disconnect
or get damaged. This may lead
to electric shock or fire.WARNING - Cooling fan
Do not touch the cooling fan
while vehicle is charging. When
the vehicle is switched OFF
while charging, the cooling fan
inside the motor compartment
may automatically operate.

H104. Remove any dust on the charging
connector and charging inlet.
5. Hold the charging connector han- dle and insert it into the charging
inlet while pressing the release
button(1), until you hear a click
sound. If it is not fully connected, a
bad connection between the
charging connector and the charg-
ing terminals may cause a fire. 6. Check if the charging cable con-
nection indicator of the high volt-
age battery in the instrument clus-
ter is turned ON.
Charging does not occur when the
indicator is OFF. When the charg-
ing connector is not connected
properly, reconnect the charging
cable to charge.
✽ ✽ NOTICE
• The charging is in progress only
with the shift lever is in P (Park).
Charging the battery with the
Engine Start/Stop button in the
ACC position is possible. However,
it may discharge the 12-V battery.
Thus, if possible, charge the bat-
tery with the Engine Start/Stop
button in the OFF position.
• Moving the shift lever from P (Park) to R (Reverse)/N(Neutral)/D
(Drive) stops the charging process.
To restart the charging process,
move the shift lever to P (Park),
press the Engine Start/Stop button
to the OFF position, and discon-
nect the charging cable. Then,
connect the charging cable.
CHARGING THE PLUG-IN HYBRID VEHICLE (CONT.)
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7. After charging has started, theestimated charging time is dis-
played on the instrument cluster
for about 1 minute. It is also dis-
played, when the driver’s door is
opened with charging in progress.
When scheduled charging is set,
the estimated charging time is dis-
played as “--” .
Unlock Charging Door in
Emergency
If the charging door does not open
due to battery discharge, open the
hood and slightly pull the emergency
cable which is located in headlamp
cover as shown above.
The charging door will then open.
Charging Status
Checking Charging Status
You can monitor the charging status
outside of the vehicle when charging
the high-voltage battery.
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6. Remove any dust on the chargingconnector and charging inlet.
7. Hold the charging connector han- dle and insert it into the charging
inlet while pressing the release
button(1), until you hear a click
sound. If it is not fully connected,
improper connection between the
charging connector and the charg-
ing terminals are a potential fire
hazard. 8. Charging starts automatically.
Check if the power lamp and
charging lamp (orange) are ON. 9. Check if the charging cable con-
nection indicator of the high volt-
age battery in the instrument clus-
ter is turned ON.
Charging does not occur when the
indicator is OFF. When the charg-
ing connector is not connected
properly, reconnect the charging
cable to charge.
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