Reading the Kona battery label

The manual's Battery capacity label section explains each item on the label it illustrates:

From the Battery capacity label section of the 2026 Kona owner's manual (code SX2), read November 10, 2026. The manual says the actual battery label in the vehicle may differ from the illustration.

For vehicles with a power liftgate, the same section notes that the power liftgate needs to be reset after the battery has been replaced.

AGM battery rules and Idle Stop and Go

Because the labeled Kona battery is an Absorbent Glass Mat (AGM) battery, these rules from the manual apply:

From the Battery recharging and Idle Stop and Go (ISG) sections of the 2026 Kona owner's manual. ISG is listed as if equipped.

Kona battery care from the owner's manual

For the best battery service, the manual says:

• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connections clean, tight, and coated with petroleum jelly or terminal grease.
• Rinse any spilled acid from the battery right away with a solution of water and baking soda.
• If the vehicle will not be used for an extended time, disconnect the battery cables.
• If you will not use the vehicle for a long time in a low temperature area, disconnect the battery and keep it indoors.
• Always charge the battery fully to prevent battery case damage in low temperature areas, and never connect unauthorized electronic devices to the battery.

The maintenance schedule in the same manual lists battery condition as an inspection item every 8,000 miles or 12 months, and its at-least-once-a-year owner checks include cleaning the battery and terminals. Under winter precautions, the manual notes that winter temperatures may affect battery performance and says to inspect the battery and cables; an authorized Hyundai dealer or a service station can check the charging level.

From the Battery, owner maintenance, maintenance schedule and Winter precautions sections of the 2026 Kona owner's manual.

How to recharge a Kona battery

If the battery becomes discharged, the manual says to run the engine for at least 60 minutes, driving or at idle. Alternatively, it says you may connect a fully automatic regulated charger to the front jumper posts in the engine compartment; for the AGM battery, use only a fully automatic charger developed for AGM batteries. The manual's charging warnings:

• Before maintenance or recharging, turn off all accessories and press the Engine Start/Stop button to OFF.
• Keep flames, sparks and smoking materials away, and always work outdoors or somewhere with plenty of ventilation.
• Wear eye protection when checking the battery during charging.
• Never recharge the battery while the vehicle's battery cables are connected to it; the warning says the battery must be removed from the vehicle and placed in a well-ventilated area.
• Watch the battery during charging, and stop or reduce the charging rate if the cells begin boiling violently.
• Remove the negative cable first and install it last. To disconnect the charger: turn off the charger main switch, unhook the negative clamp, then unhook the positive clamp.

From the Battery and Battery recharging sections of the 2026 Kona owner's manual.

How to jump start a Kona

The manual says jump starting can be dangerous if done incorrectly; if you are unsure, have a service technician or towing service do it. Use only a 12 V power supply (a battery or jumper system), never jump start a frozen battery, do not try to push-start the vehicle, and do not let the positive and negative cables touch. The manual's steps:

1. Position the vehicles close enough for the jumper cables to reach, without letting the vehicles touch. Avoid fans and any moving parts in the engine compartment at all times, even when the vehicles are off.
2. Turn off all electrical devices such as radios, lights and air conditioning. Put both vehicles in P (Park), apply the parking brake and turn both vehicles off.
3. Open the hood and remove the engine compartment fuse box cover. Identify the positive (+) and negative (-) terminals correctly to avoid a reverse-polarity connection.
4. Connect one jumper cable to the red, positive (+) battery terminal of your Kona, and the other end to the red, positive (+) battery or jumper terminal of the assisting vehicle.
5. Connect the second cable to the black, negative (-) battery or jumper terminal of the assisting vehicle, and the other end to the chassis ground of your Kona. Do not connect it to the negative (-) jumper terminal of the discharged battery: a spark could cause the battery to explode.
6. Start the assisting vehicle, let it run at about 2,000 RPM for a few minutes, then start your Kona.
7. Disconnect the cables in the exact reverse order: your Kona's chassis ground, the assisting vehicle's negative (-) terminal, the assisting vehicle's positive (+) terminal, then your Kona's positive (+) jumper terminal.

Afterward, keep the Kona running for at least 30 minutes at idle or driving so the battery can start it on its own; a completely discharged battery may need as long as 60 minutes of runtime to fully recharge. The Battery recharging section says to drive for 20-30 minutes after a jump start from a good battery before shutting off, or the vehicle may not restart. If it does not start after a few attempts, have it inspected by an authorized Hyundai dealer.

From the Jump Starting and Battery recharging sections of the 2026 Kona owner's manual.

What to reset after a battery change or disconnect

The manual lists these items as possibly needing a reset after the battery has been discharged or removed:

• Current Trip, Since Refueling and Since Rest trip information
• Integrated memory system
• Power window
• Sunroof
• Climate control system
• Power liftgate
• Clock
• Infotainment system

Planning a battery check? Schedule service or see our battery service in Michigan City.

From the Reset items section of the 2026 Kona owner's manual. Items apply where your vehicle has them.

Michigan City Hyundai service hours

From Michigan City Hyundai's website, November 10, 2026. The website lists Monday to Saturday service hours and none for Sunday. Holiday hours can differ.