Hyundai Venue (QX): Charging System / Battery. Repair procedures

Hyundai Venue (QX) (2020-2025) Service Manual / Engine Electrical System / Charging System / Battery. Repair procedures

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.
–
General charge: Charging the battery for a long time with low current
–
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
Hyundai Venue. Battery. Repair procedures   
•
Refer to the instruction manual provided by the battery charger equipment manufacturers for detailed charging procedures and precautions.
Removal
Battery
1.
Turn the ignition switch OFF.
2.
Disconnect the battery (-) terminal (A).
3.
Remove the battery (+) terminal (B).
Battery (-) terminal installation :
4.0 - 6.0 N.m (0.4 - 0.6 kgf.m, 3.0 - 4.4 lb-ft)
Battery (+) terminal installation :
7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb-ft)

Hyundai Venue. Battery. Repair procedures
4.
Remove the battery insulation pad (A).
5.
Remove the battery (B) after removing the mounting bracket (C).
Battery mounting bracket installation :
9.0 - 14.0 N.m (0.9 - 1.4 kgf.m, 6.6 - 10.3 Ib-ft)

Hyundai Venue. Battery. Repair procedures
Battery Tray
1.
Remove the battery.
(Refer to "Removal")
2.
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
3.
Remove the ECM.
(Refer to Engine Control System - "ECM")
4.
Remove the installation bolt (A) and then remove the battery (+) terminal bracket.
Battery (+) terminal bracket installation bolt :
8.0 - 10.0 N.m (0.8 - 1.0 kgf.m, 5.9 - 7.4 lb-ft)

Hyundai Venue. Battery. Repair procedures
5.
Remove the battery tray after loosening the bolts (A).
Battery tray installation bolts :
8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)

Hyundai Venue. Battery. Repair procedures
Installation
1.
Install in the reverse order of removal.
Hyundai Venue. Battery. Repair procedures   
•
When installing the battery, fix the mounting bracket on the tray correctly.
Hyundai Venue. Battery. Repair procedures   
•
After disconnecting then reconnecting the battery negative cable, reset some parts that require the reset procedures.
(Refer to Body Electrical System - "General Information")
Vehicle parasitic current inspection
1.
Turn the all electric devices OFF, and then turn the ignition switch OFF.
2.
Close all doors except the engine hood, and then lock all doors.
(1)
Disconnect the hood switch connector.
(2)
Close the trunk lid.
(3)
Close the doors or remove the door switches.
3.
Wait a few minutes until the vehicle’s electrical systems go to sleep mode.
Hyundai Venue. Battery. Repair procedures   
•
For an accurate measurement of a vehicle parasitic current, all electriacl systems should go to sleep mode. (It takes at least one hour or at most one day.) However, an approximate vehicle parasitic current can be measured after 10-20 minutes.
4.
Connect an ammeter in series between the battery (-) terminal and the ground cable, and then disconnect the clamp from the battery (-) terminal slowly.
Hyundai Venue. Battery. Repair procedures   
•
Be careful that the lead wires of an ammeter do not come off from the battery (-) terminal and the ground cable to prevent the battery from being reset. In case the battery is reset, connect the battery cable again, and then start the engine or turn the ignition switch ON for more than 10 sec. Repeat the procedure from No. 1.
a.
Connect a jump cable between the battery (-) terminal and the ground cable.
b.
Disconnect the ground cable from the battery (-) terminal.
c.
Connect an ammeter between the battery (-) terminal and the ground cable.
d.
After disconnecting the jump cable, read the current value of the ammeter.

Hyundai Venue. Battery. Repair procedures
5.
Read the current value of the ammeter.
•
If the parasitic current is over the limit value, search for abnormal circuit by removing a fuse one by one and checking the parasitic current.
•
Reconnect the suspected parasitic current draw circuit fuse only and search for suspected unit by removing a compoconnected with the circuit one by one until the parasitic draw drops below limit value.
Limit value (after 10-20 min.) : Below 50mA
Cleaning
1.
Make sure the ignition switch and all accessories are in the OFF position.
2.
Disconnect the battery cables (negative first).
3.
Remove the battery from the vehicle.
Hyundai Venue. Battery. Repair procedures   
•
Care should be taken in the event the battery case is cracked or leaking, to protect your skin from the electrolyte.
Heavy rubber gloves (not the household type) should be wore when removing the battery.

Hyundai Venue. Battery. Repair procedures
4.
Inspect the battery tray for damage caused by the loss of electrolyte. If acid damage is present, it will be necessary to clean the area with a solution of clean warm water and baking soda. Scrub the area with a stiff brush and wipe off with a cloth moistened with baking soda and water.
5.
Clean the top of the battery with the same solution as described above.
6.
Inspect the battery case and cover for cracks. If cracks are present, the battery must be replaced.
7.
Clean the battery posts with a suitable battery post tool.
8.
Clean the inside surface of the terminal clamps with a suitable battery cleaning tool. Replace damaged or frayed cables and broken terminal clamps.
9.
Install the battery in the vehicle.
10.
Connect the cable terminals to the battery post, making sure tops of the terminals are flush with the tops of the posts .
11.
Tighten the terminal nuts securely.
12.
Coat all connections with light mineral grease after tightening.
Hyundai Venue. Battery. Repair procedures   
•
When batteries are being charged, an explosive gas forms beneath the cover of each cell. Do not smoke near batteries being charged or which have recently been charged. Do not break live circuit at the terminals of batteries being charged.
A spark will occur when the circuit is broken. Keep open flames away from battery.

    Specifications Battery Item Specification Model type CM 45L-DIN Capacity [20HR / 5HR] (AH) 45 / 36 Cold Cranking Amperage (A) 410 (SAE / 328) Reserve Capacity (Min) 80

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