Kia Optima Hybrid 2013 Owner's Manual page 330

Battery recharging
Your vehicle has a maintenance-free,
calcium-based battery.
• If the battery becomes discharged in a
short time (because, for example, the
headlights or interior lights were left on
while the vehicle was not in use),
recharge it by slow charging (trickle)
for 10 hours.
• If the battery gradually discharges
because of high electric load while the
vehicle is being used, recharge it at 20-
30A for two hours.
When recharging the battery, observe
the following precautions:
• The battery must be removed from the
vehicle and placed in an area with
good ventilation.
• Watch the battery during charging, and
stop or reduce the charging rate if the
battery cells begin gassing (boiling)
violently or if the temperature of the
electrolyte of any cell exceeds 49°C
(120°F).
• Wear eye protection when checking
the battery during charging.
• Disconnect the battery charger in the
following order.
1. Turn off the battery charger main
switch.
2. Unhook the negative clamp from the
negative battery terminal.
3. Unhook the positive clamp from the
positive battery terminal.
• Before performing maintenance or
recharging the battery, turn off all
accessories and stop the engine.
• The negative battery cable must be
removed first and installed last when
the battery is disconnected.
Maintenance
Reset items
Items should be reset after the battery
has been discharged or the battery has
been disconnected.
• Auto down window (See section 4)
• Sunroof (See section 4)
• Trip computer (See section 4)
• Climate control system
(See section 4)
• Clock (See section 4)
• Audio (See section 4)
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