Car manufacturers do offer specific warranties for battery degradation in electric vehicles (EVs), typically mandated by federal regulations in the U.S. These warranties generally cover the battery for at least 8 years or 100,000 miles, whichever comes first.
Key features of EV battery warranties include:
- Duration: Most manufacturers provide an 8 to 10-year or 100,000-mile warranty on the battery.
- Capacity retention guarantee: Many warranties cover battery state of health (SoH), which usually means the battery must retain at least 70% of its original capacity during the warranty period. If capacity falls below this threshold, the manufacturer will repair or replace the battery.
- Examples: Hyundai and Kia offer a notable 10-year/100,000-mile warranty that guarantees the battery will not degrade beyond 70% of its original capacity during the warranty term. Tesla similarly provides a warranty covering battery and drive unit health with the 70% capacity threshold.
Exclusions and nuances:
While the warranties guarantee against significant capacity loss or failure, some manufacturers note that gradual loss of battery energy or power due to normal use over time may not be covered. For example, Hyundai’s detailed warranty documentation clarifies that typical battery degradation with use is not covered if the vehicle can still operate under its own power. The warranty primarily ensures the battery won’t fail completely within the coverage period.
Summary:
- EV battery warranties are industry-standard at 8 years/100,000 miles minimum.
- They commonly guarantee the battery retains at least 70% of its capacity.
- If capacity drops below that, the battery will be repaired or replaced under warranty.
- Normal gradual degradation might not be fully covered, as long as the battery still functions sufficiently.
- Some manufacturers, like Hyundai and Kia, offer longer warranty periods with similar degradation coverage.
Thus, specific warranties for battery degradation exist and provide protections to ensure the battery retains usable capacity during the warranty period.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/are-there-specific-warranties-offered-by-car-manufacturers-for-battery-degradation/
