Hyundai Elantra: Adjustment - AGM Battery. Repair procedures - ISG (Idle Stop & Go) System - Fuel System - Hyundai Elantra MD 2010-2018 Service manualHyundai Elantra: Adjustment


Battery charging
In general, vehicle battery charging system has three forms.
1.
Constant current charge: The battery voltage gradually rises by charging with setting a constant current. If charging current and time are not managed correctly, the battery is over-charged, therefore charging should be stopped after confirming the completion of charging.
A.
General charge: Charging the battery for a long time with low current
B.
Quick charge: Charging the battery for a short time with high current
2.
Constant voltage charge: The battery charge current is gradually reduced by charging with setting a constant voltage.
3.
Constant current-Constant voltage charge: Charging with constant current and voltage to protect the battery damage
(1)
Initial Stage: Charging with constant current
(2)
Last Stage: Charging with constant voltage
Refer to the instruction manual provided by the battery charger equipment manufacturers for detailed charging procedures and precautions.
[AGM battery charging]
AGM battery should be charged with constant voltage or constant current-constant voltage in order to minimize performance degradation due to the charging.
If charging the battery with constant current, overcharging may occur. It can cause damage to the internal battery and will give an adverse effect on battery life.
Do not charge with more than 14.8V or quick charge mode.
[Constant voltage charge conditions]

Charging voltage / time: 14.7V [68F ~ 86F (20C ~ 30C)] / approximately 24 hours
The minimum charge voltage: 14.4V [68F ~ 86F (20C ~ 30C)]
The maximum charging voltage: 14.8V [68F ~ 86F (20C ~ 30C)]

Battery temperature should be maintained at about 68F ~ 86F (20C ~ 30C) during charging of the battery.
If the battery is charged directly at the battery terminals on vehicles with battery sensor, misinterpretations of battery condition and under certain circumstances also unwanted Check Control messages or fault memory entire can occur.
After recharging finished, let the battery stand for over 10 hours with normal temperature for battery stabilization.

    Removal
    1. Remove the battery. (1) Disconnect the battery terminals (A). Tightening torque (+ ...