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Hyundai Ioniq 9: Battery Warranty

Hybrid, Plug-in Hybrid, and Electric Vehicle Warranty, all states

Model yearTermRepair or replacement maintains at least
202610 years or 100,000 miles, whichever occurs first70% of the original battery capacity
  • The repair standard: any repair or replacement "will maintain at least equal energy capacity to the original Battery before the failure occurred but no less than 70% of the original battery capacity."
  • The handbook states battery capacity two ways on printed p. 24. Under "this Battery Limited Warranty": loss of battery capacity or power over time or due to or resulting from battery usage "is covered not to degrade more than 70% of the original battery capacity." Under What Is Not Covered: "Loss of battery energy or power over time or due to or resulting from battery usage, is NOT covered under this Hybrid, Plug-in Hybrid, and Electric Vehicle Warranty."
  • 2026, Hyundai's Ioniq 9 web page, note to "Hybrid/Electric Battery Warranty" in its "2026 IONIQ 9 Warranty" table: "Coverage does not apply to lease and commercial vehicles or vehicles serviced or registered outside the U.S."

2026 cars certified to California standards and registered in California, Massachusetts, New York, Oregon, Vermont or Washington: the handbook's figures by page

Printed pageSectionWhat it says
46California Propulsion-Related Part Warranty Statement"For 8 years or 100,000 miles (whichever occurs first): If any high voltage battery is defective, the part will be repaired or replaced by HMA."
48California Propulsion-Related Part Warranty, Special Note"High voltage battery is covered for 8 years or 100,000 miles (whichever occurs first)." Then: "Hyundai provides … 10 years or 100,000 miles coverage for high voltage battery."
495-year/60,000-mile propulsion-related parts listBattery System Assembly "*7/70", Ioniq 9 among the models named; parts designated "7/70" are warranted for 7 years or 70,000 miles, whichever occurs first
495-year/60,000-mile propulsion-related parts list, NOTE 2High voltage battery designated "10/100" is warranted for 8 years or 100,000 miles, whichever occurs first, under Hyundai's Hybrid, Plug-in Hybrid and EV warranty, "see page 23"
  • On printed p. 49, "*7/70" with Ioniq 9 named also marks the Battery Management Unit and the High Voltage Battery System's EWP.

Coverage at a glance

ItemAnswer
Covered components (Section 6's list)High Voltage Battery, along with the components directly attached to or integral to its operation: Battery Management System; Blower Assembly; Electronic Air Compressor; Power Relay Assembly; Hybrid Starter & Generator; Traction Motor including housing case; Hybrid Power Control Unit; OBC; Electric Power Control unit
Clock startsDate of original retail delivery or date of first use
Battery repairIf possible, the battery components are repaired or replaced and the original battery is returned to the vehicle; if necessary, the battery is replaced with a new or refurbished battery
Parts usedNew Hyundai Genuine Parts or Hyundai authorized remanufactured parts
TowingTo the nearest Hyundai Dealership or authorized service location, when the vehicle is inoperable due to a warrantable defect within 10 years or 100,000 miles, whichever occurs first

Transfer, in the handbook's words

  • Warranty Transferability, printed p. 18: "The New Vehicle Limited, Anti-Perforation Limited, Federal Emission Performance, Federal Emission Design and Defect, California Emission Control Systems, and Replacement Parts and Accessories Limited warranty coverage described in this handbook apply to the vehicle regardless of a change in ownership, and are transferable to subsequent owners. The 10 years/100,000 miles Powertrain Limited Warranty is not transferable and applies only to the original owner …"
  • The Summary of Warranty Coverage, printed p. 16, marks the Powertrain row "(ORIGINAL OWNER)", with the footnote "Original Owner 10 Years/100,000 Miles, Subsequent Owner(s) 5 Years/60,000 Miles". The "Hybrid, Plug-in Hybrid, and Electric Vehicle Direct Energy Components" row reads "10 years/100,000 miles".

What is not covered

The handbook's Hybrid, Plug-in Hybrid, and Electric Vehicle section, printed pp. 23–24, excludes:

  • Damage resulting from intentional actions (including intentionally abusing or destroying your vehicle or ignoring active vehicle warnings), a collision or accident, or the servicing or opening of the Battery by non-authorized personnel.
  • "Physical Battery damage, or intentional damage by physical means, programming, or other methods, to extend (other than as specified in your owner documentation) or reduce the life of the Battery."
  • Exposing the Battery to direct flame.
  • Flooding of the Battery.
  • Items not covered by, and exclusions and limitations of, the "What is Not Covered" section of the Hyundai New Vehicle Limited Warranty.
  • Loss of battery energy or power over time or due to or resulting from battery usage.
  • Physically damaging the battery, or intentionally attempting, either by physical means, programming, or other methods, to extend (other than as specified in the Owner's Manual provided with the Vehicle at the time of first retail purchase) or reduce the life of the battery.
  • Exposing the battery to direct flame ("such as a result of any body repairs").
  • Incidental or consequential damages associated with a vehicle failure, including without limitation loss of time; inconvenience; cost of transportation; telephone calls and lodging; loss of personal or commercial property; loss of pay or revenue; and loss of use of the vehicle.

See it for yourself

Scope note

US-market model year 2026, from the Owner's Handbook & Warranty Information that Hyundai's warranty page links for that year; EPA rates the 2026 Ioniq 9. Hyundai writes one handbook per model year for its whole US lineup, and the rows above are the terms that handbook gives the High Voltage Battery. The handbook delivered with a specific car is the authority for that car.