Hyundai Sonata: Charging System / Battery Description and Operation
[AGM Battery]
AGM battery is used for especially heavy load on the vehicle
network depending on equipment and requirements. AGM stands for
Absorbent Glass Material Battery; that is absorbent glass fibre fleece.
AGM batteries are fitted in models with electrical loads/consumers which
have a high energy demand.
The constantly increasing energy demand of modern vehicle electrical systems calls for ever more powerful battery solutions.
The power consumption is considerable even when the vehicle is parked.
The somewhat higher price compared with a battery of similar size is fully balanced by the following benefits:
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Significantly longer service life |
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Increased starting reliability at low temperatures |
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100 % freedom from maintenance |
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Low risk in event of an accident (reduced risk to the environment) |

Removal
1.
Disconnect the battery negative terminal.
2.
Loosen the mounting bolts (A) and then, turn the adjusting bolt (B) clockwise to loosen tension.
3.
Remove the drive belt (A).
4. ...
Specifications
?AGM80L-DIN
ItemSpecificationModel typeAGM80L-DINCapacity [20HR/5HR] (AH)80/64 Cold Cranking Amperage (A)800 (SAE) 640 (EN)Reserve Capacity (Min)140
...
Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: Emergency braking
If there is a problem with the brake pedal while driving, emergency braking is
possible by pulling up and holding the EPB switch. Braking is possible only while
you are holding the EPB switch. However, braking distance will be longer than normal.
WARNING
Do not operate the parking brake while the ...
Hyundai Sonata LF 2014-2019 Owners Manual: Welcome System
Welcome light
Door handle lamp
When all the doors (and trunk) are closed and locked, the door handle lamp will
come on for about 15 seconds if any of the below is performed.
When the door unlock button is pressed on the remote key or smart key.
When the button of the outside door handle is pres ...