What batteries does the Niro hybrid have?

Kia's 2027 Niro hybrid owner's manual describes a high-voltage hybrid (HEV) battery that powers the electric motor, a 12-volt battery for the vehicle's electrical system, and, if equipped, a 12V parking lithium battery. The manual's Engine section lists the Smartstream G1.6 GDi HEV. It covers the Niro hybrid; Niro EV owners should check their own manual.

From the HEV system, High voltage battery system, Hybrid battery cooling duct, Charging the battery, For best battery service and 12V parking lithium battery sections of the 2027 Kia Niro hybrid owner's manual (ownersmanual.kia.com, code SG2, read November 9, 2026). Ask our service team which 12V setup your Niro has.

Keep the hybrid battery cooling duct clear

The manual says the hybrid battery cooling duct is under the rear seats and cools the hybrid battery; if it is blocked, the battery might overheat.

• Clean the cooling duct regularly with a dry cloth, never a wet one.
• Do not cover the duct, put objects into it, or set containers of liquid on or near it.
• If anything blocks the duct, contact a Kia dealer right away.
• Secure luggage before driving so a sharp or heavy load cannot strike or pierce the liftgate's interior wall.

From the Hybrid battery cooling duct section of the 2027 Kia Niro hybrid owner's manual (ownersmanual.kia.com, code SG2, read November 9, 2026).

Using the 12V BATT RESET button

If the 12V battery's protection function has disconnected it, the manual gives these steps:

1. Open the driver's door with the emergency (mechanical) key.
2. Press the 12V BATT RESET button to reconnect the battery.
3. Start the vehicle within 15 seconds.
4. With the vehicle started (READY indicator on), keep it stopped or drive for about 30 minutes to fully recharge the battery.

If the vehicle is not started right after the button is pressed, the manual says the battery disconnects again after a few seconds; press it again and start immediately. Repeated presses without at least 30 minutes in READY can over-discharge the battery, and if it is too discharged for the reset to work, jump start the vehicle. When the vehicle is in READY, the manual says the battery charges whether or not the engine is running.

From the Charging the battery and 12V battery reset button sections of the 2027 Kia Niro hybrid owner's manual (ownersmanual.kia.com, code SG2, read November 9, 2026).

How to jump start a Niro hybrid

1. Make sure the booster battery is 12-volt and that its negative terminal is grounded. If it is in another vehicle, do not let the vehicles touch. Turn off all unnecessary electrical loads.
2. Connect one end of a jumper cable to the charging terminal inside the engine compartment fuse panel, and the other end to the positive terminal of the booster battery.
3. Connect one end of the other jumper cable to the negative terminal of the booster battery, and the other end to a ground: a solid, stationary, metallic latch (such as the engine lifting bracket) away from the battery.
4. Do not let the jumper cables touch anything except the correct terminals or the correct ground, and do not lean over the battery while connecting them.
5. If the booster battery is in another vehicle, start that vehicle first and let it run at 2,000 rpm for several minutes.
6. Press the 12V BATT RESET button.
7. Once the Niro starts, disconnect the cable at the negative terminal of the booster battery first, then the other jumper cable from the charging terminal inside the engine compartment fuse panel.
8. If it is not obvious why the battery was discharged, have the vehicle checked by an authorized Kia dealer.

The manual also says not to jump start another vehicle with your hybrid, because that will damage the hybrid vehicle's 12-volt battery, and that vehicles equipped with a Dual Clutch Transmission can only be jump started, not push started. Never tow the vehicle to start it.

From the Jump starting and Push starting sections of the 2027 Kia Niro hybrid owner's manual (ownersmanual.kia.com, code SG2, read November 9, 2026). Use only a 12-volt jumper system, and do not try to jump start a frozen battery.

Prefer to have us handle it? Ask about Kia battery service in Michigan City.

Recharging and what to reset afterward

For the 12V battery, the manual says that if it discharges, start the vehicle for at least 60 minutes, driving or idling, or connect a fully automatic regulated charger to the engine compartment front jumper posts or to the 12V battery. Before maintenance or recharging, turn off all accessories and stop the vehicle; the negative cable comes off first and goes back on last.

After the 12V battery has been discharged or disconnected, the manual lists these items to reset:

• Auto up and down windows
• Climate control system
• Sunroof
• Radio presets
• Clock

From the 12V battery recharging and Reset items sections of the 2027 Kia Niro hybrid owner's manual (ownersmanual.kia.com, code SG2, read November 9, 2026). Items apply where your vehicle has them.

Planning other service? Check service specials or schedule service.

Michigan City Kia sales hours

Sales hours as listed on Michigan City Kia's website, November 9, 2026. Holiday hours can differ.