Reliability

Hyundai Motor Group

Kia EV9 99.8 kWh (E-GMP)

NCM 811 cells from SK On · 99.8 kWh · used in 2 model variants.

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Pack reference

NCM 811 · SK On · 552-volt, 180.9 Ah pack on the 800-volt-class E-GMP platform, liquid-cooled
About the pack
Capacity
99.8 kWh
as published
Fast charge
210 kW
peak · about 24 min to 80%
Warranty floor
70%
capacity floor at 10 yr / 100k mi

Pack overview

ChemistryNCM 811
Cell supplierSK On
Cell formatPouch
Voltage (nominal)552 V
CoolingLiquid
Architecture552-volt, 180.9 Ah pack on the 800-volt-class E-GMP platform, liquid-cooled
Warranty 10 yr / 100k mi
Capacity floor70%

Known issues

High
NHTSA 26V-431 (July 2026) covers eight vehicles, one of them a 2024 EV9 and the rest 2022-2024 EV6s, whose high-voltage battery cells may have misaligned electrodes that can cause a fire while parked or driving. Owners are told to park outside and charge to no more than 80% until dealers replace the high-voltage battery assembly, free of charge.
Low
Kia's ICCU recalls 24V-200 and 24V-867 cover the 2022-2024 EV6 and do not name the EV9.
Low
NHTSA 24V-757 (October 2024) covers certain 2024-2025 EV9 vehicles whose instrument panel screen may fail because of a software error. The software is updated by a dealer or over the air, free of charge. This is not a battery recall.
Low
The base Light trim does not use this pack. Kia's spec sheet gives it 76.1 kWh at 632 volts, with a 235 kW charging peak and 20 minutes on a 350 kW charger, against 99.8 kWh, 552 volts, 210 kW and 24 minutes for every other trim.
Low
The heat pump is standard on the Wind, Land and GT-Line. Kia lists none on the Light, and on the Light Long Range it was optional for 2025 only.

How this pack ages (industry context)

Industry fleet aggregates: 2.3% average annual capacity loss across 22,700 EVs / 21 models (Geotab, 2026), and 95% range retention at 5 years on average across 30,000+ vehicles (Recurrent, 2026).

OEM warranty floor on this pack: 10 yr / 100k mi to 70% capacity.

Public per-pack degradation curves are not available for most models. Individual results vary materially with climate, charging behavior, and DC fast-charge frequency.

Vehicles using this pack

Battery-Related NHTSA Recalls

Recalls affecting battery, charging, electric propulsion, or thermal-event systems on vehicles using this pack, as of the last complaint-data run. Each campaign names the model generation it was filed against; the summary gives the model years covered.

26V431000 Jul 2, 2026 ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

Kia America, Inc. (Kia) is recalling certain 2022-2024 EV6 and 2024 EV9 vehicles. The high voltage battery cells may contain misaligned electrodes, which can lead to a fire while parked or driving.

Consequence: A fire increases the risk of injury.

Filed against: Kia EV9 2024-2025

25V115000 Feb 24, 2025 ELECTRICAL SYSTEM:PROPULSION SYSTEM

Kia America, Inc. (Kia) is recalling certain 2025 EV9 vehicles. The rear gear drive unit (GDU) motor shaft may have been improperly welded and become damaged, causing a loss of drive power.

Consequence: A loss of drive power increases the risk of a crash.

Filed against: Kia EV9 2024-2025

For TWD editorial coverage of major recall campaigns, see /recalls/.

Pack family

Kia EV9 99.8 kWh (E-GMP) is part of the hyundai-egmp family. Related packs:

Frequently Asked Questions

What chemistry is the Kia EV9 99.8 kWh (E-GMP)?

The Kia EV9 99.8 kWh (E-GMP) uses NCM 811 chemistry. Cells are supplied by SK On. Cell format: Pouch. Pack architecture: 552-volt, 180.9 Ah pack on the 800-volt-class E-GMP platform, liquid-cooled.

What is the warranty on this pack?

10 years or 100,000 miles, with capacity coverage to 70% of original. Specific terms vary by year and trim; check the manufacturer's warranty booklet for the exact vehicle.

How much does this pack degrade over time?

Industry-wide fleet aggregates show roughly 2.3% average annual capacity loss across 22,700 EVs (Geotab, 2026), with about 95% range retention at five years on average across Recurrent's 30,000+ vehicle fleet (2026). Public per-pack degradation curves are not available for most models. The Kia EV9 99.8 kWh (E-GMP) battery warranty runs 10 years / 100,000 miles to a 70% capacity floor, which is the OEM-guaranteed minimum within that period. Individual results vary with climate, charging habits, and DC fast-charging frequency.

Which vehicles use the Kia EV9 99.8 kWh (E-GMP)?

Kia EV9 2024-2025 (Light Long Range / Wind / Land / GT-Line (99.8 kWh). The base Light uses a separate 76.1 kWh pack); Kia EV9 2026-2026 (Light Long Range / Wind / Land / GT-Line (99.8 kWh). The base Light uses a separate 76.1 kWh pack).

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