An electric vehicle’s battery is one of its most expensive parts, so the battery warranty is a big part of the decision when you buy a Ford Mustang Mach-E, a used F-150 Lightning or an E-Transit van. But “battery problem” can mean very different things: a manufacturing defect, a failed electrical component, gradual loss of range, or physical damage after an accident. A warranty treats each of those differently.
Ford’s U.S. warranty guide for its battery-electric vehicles covers the high-voltage battery and related electric components for 8 years or 100,000 miles, whichever comes first, and separately guards against excessive capacity loss. That does not mean Ford replaces every battery that loses some range, and it does not pay for collision damage.
This guide explains how the warranty works, what the 70% capacity rule means, what is excluded, how it differs from insurance, what happens with a used Ford EV, and how to make a claim. It is based on Ford’s published 2024 model-year Battery Electric Vehicle Warranty Guide, so check the guide for your own model year before relying on any detail.
Short answer: Ford’s battery-electric vehicles carry an Electric Vehicle Component warranty of 8 years or 100,000 miles, whichever comes first. It covers defects in the high-voltage battery and related parts, and it guards against excessive capacity loss, defined as below 70% of the battery’s original capacity. Accident, fire, flood and several other causes are excluded, and repairs to the battery assembly must be done by an EV Certified Ford dealership.
What is Ford’s EV battery warranty?
Ford’s battery-electric vehicles are covered by the New Vehicle Limited Warranty, which includes several coverage periods. According to Ford’s 2024 warranty guide, bumper-to-bumper coverage is 3 years or 36,000 miles, powertrain coverage is 5 years or 60,000 miles, and the Electric Vehicle Component coverage is 8 years or 100,000 miles. Whichever limit you reach first ends the coverage (Ford 2024 BEV Warranty Guide).
For example:
- An EV that reaches 100,000 miles in six years hits the mileage limit first.
- An EV driven only 45,000 miles in eight years hits the time limit first.
- An EV that is five years old with 60,000 miles is still inside both limits, subject to its warranty start date.
When does the clock start?
Ford says the Warranty Start Date is the day you take delivery of the new vehicle or the day it is first put into service, such as a dealer demonstrator, whichever comes first. The clock does not restart when a second owner buys the car.
Which Ford EVs are covered?
The 2024 guide covers the E-Transit, Mustang Mach-E and F-150 Lightning together. Ford ended F-150 Lightning production in late 2025, but reporting based on Ford’s statements says existing owners keep warranty coverage, service, parts and software support, with the 8-year/100,000-mile battery warranty running from each truck’s original start date (autoevolution). This guide is for battery-electric vehicles, so hybrids and plug-in hybrids fall under different warranty provisions. Always check the exact guide for your vehicle and model year.
What does the 8-year/100,000-mile warranty cover?
Ford’s guide says the high-voltage battery and eDrive systems are covered by the Electric Vehicle Component coverage. The listed components are:
- High-voltage battery assembly
- Bussed Electrical Center
- Battery Energy Control Module
- On-board charger
- Inverter System Controller
- DC/DC converter
- eDrive
If a covered component needs replacing, Ford says it may be replaced with a new, factory remanufactured or factory refurbished component, at Ford’s discretion. The guide says refurbished battery components will match your vehicle’s age and mileage and meet Ford’s standards.
Defects
The base warranty covers parts that fail during normal use because of a defect in factory materials or workmanship, as long as the vehicle was properly operated and maintained. A warning light by itself does not prove a repair is covered; Ford’s dealer must diagnose the fault and assess it under the warranty terms.
Excessive capacity loss
Ford separately warrants the battery against excessive capacity loss for the same 8 years or 100,000 miles. We explain that rule below.
Software update defects
Ford also states that, during the warranty period, you will not be charged for diagnosis or repair of components damaged by a defect caused by a Ford Power-Up software update.
What does Ford’s 70% capacity rule mean?
Ford’s guide acknowledges that a lithium-ion battery loses capacity over time and with use, and calls gradual loss normal wear and tear. It treats capacity as excessive when an authorized EV Certified Ford dealer determines it is below 70% of the battery’s beginning-of-life capacity. For cutaway and chassis-cab configurations the threshold is 65%.
Here is a simple illustration (not Ford’s test procedure):
| Battery condition | Remaining capacity |
|---|---|
| Original | 100% |
| Moderate degradation | 90% |
| Further degradation | 80% |
| Below Ford’s threshold | Under 70% |
If a battery originally held 100 kWh of usable energy, 70% would be 70 kWh.
Does 80% battery health qualify?
No. A battery at 80% is above the 70% threshold, so ordinary capacity loss at that level does not qualify under the capacity rule. You could still have a valid claim for a separate defect.
Who measures capacity?
The guide says the measurement method, and the decision whether to repair, replace or supply reconditioned or remanufactured parts, are at Ford’s sole discretion. It also says that when the threshold is met, Ford covers the necessary component repair or replacement, performed by an EV Certified Ford dealership. In practice, a claim is not an unconditional promise of a brand-new pack.
Does Ford replace the whole battery when something goes wrong?
Not necessarily. The remedy under the warranty is repair, replacement or adjustment of defective parts, and Ford decides the method. A charging fault, for example, might trace to the on-board charger, the DC/DC converter or another listed component rather than the battery cells. Ask the dealer for a written explanation of the diagnosis and what was repaired or replaced.
For typical prices when a battery is not covered, see how much EV battery replacement costs in 2026.
What does Ford’s battery warranty not cover?
A warranty is not insurance against everything that can happen to an EV. Ford’s 2024 guide lists these as not covered:
- Accidents, collisions or objects striking the vehicle
- Theft, vandalism or riot
- Fire or explosion
- Driving through water deep enough to cause water ingestion, and immersion or flooding of the high-voltage battery
- Abuse or misuse, such as driving over curbs, overloading, racing, or using the vehicle as a permanent stationary power source
- Failing to act on vehicle warnings and battery concerns within a reasonable time, typically 30 days
- Failing to complete Ford Power-Up software updates within a reasonable time, typically 30 days
- Using incompatible charging devices or methods
- Modifications to the high-voltage battery, the high-voltage system or its wiring
- Leaving the battery fully discharged or near zero state of charge for more than 14 days
- Repairs by facilities or personnel not authorized by Ford
- Improper vehicle storage that damages the battery
The guide also says the warranty is void for vehicles ever labeled or branded as dismantled, fire, flood, junk, rebuilt, reconstructed or salvaged, and for vehicles an insurance company has determined to be a total loss. It adds that the high-voltage battery assembly is not eligible for Ford Protect extended service plans.
That last point matters if you were hoping to extend battery protection past 8 years. For total-loss situations, read our guide on EV battery damage, total loss and GAP coverage.
Ford battery warranty vs. car insurance
The two protect against different risks. The warranty addresses defects and excessive capacity loss. Insurance may address accidental or sudden physical damage, depending on your policy, coverage and exclusions.
| Situation | Ford battery warranty | Car insurance |
|---|---|---|
| Manufacturing defect in the battery | May be covered | Usually not the source of protection |
| Capacity below the threshold within the period | May be covered | Generally not covered as wear |
| Battery damaged in a collision | Excluded as accident damage | Collision coverage may apply |
| Battery damaged by fire or flood | Excluded | Comprehensive coverage may apply, depending on your policy |
| Gradual loss above the threshold | Not covered | Generally not covered |
Take a collision that damages the battery enclosure. The warranty excludes accident damage, so the owner would normally report it to their insurer, and any payment depends on the policy, deductible and claim assessment. If instead the battery drops below 70% with no accident, that is the scenario the capacity coverage is designed for, and the owner can request an assessment from an EV Certified Ford dealer.
For a broader comparison, see our guides on EV battery warranty vs. insurance and whether insurance covers EV battery degradation.
Is Ford’s battery warranty transferable to a second owner?
Ford’s guide says that if you bought a previously owned 2024-model electric vehicle, you are eligible for any remaining warranty coverage. Coverage follows the original Warranty Start Date, so a second owner gets the time and miles left, not a fresh eight years.
For instance, if a Ford EV was first delivered in 2024 and sold in 2027, the buyer would have what remains of the 8-year/100,000-mile coverage, provided the claim meets the warranty conditions.
Before buying a used Ford EV, ask a Ford dealer to confirm using the VIN:
- The original warranty start date
- The recorded mileage
- The remaining high-voltage battery coverage
- Any previous battery repairs or replacements
- Any open recalls or customer-satisfaction programs
- That the vehicle has not been branded salvage or declared a total loss, since either voids the warranty
How to make a battery warranty claim
- Find your warranty guide. Use the guide for your model year, not a general summary.
- Record the symptoms. Note warning messages, charging problems and range changes. If the car shows a high-voltage warning, follow the owner’s manual and call Ford or roadside assistance.
- Go to an EV Certified Ford dealer. Ford says repairs to the high-voltage battery assembly must be performed there. The guide says you can find one with the dealer locator on Ford.com or by calling the Customer Relationship Center at 1-800-392-3673.
- Ask for the diagnosis in writing: the fault found, whether it is the battery or another component, whether capacity was tested, and which warranty provision applies.
- Get the decision in writing. If a claim is denied, ask which provision Ford relied on.
- Escalate if needed. Ford’s guide says it participates in the BBB AUTO LINE dispute program in the U.S. and that you must submit warranty disputes to it before pursuing remedies under the Magnuson-Moss Warranty Act or, where applicable, state lemon laws. Ford also says warranty repairs should be completed within a reasonable time, not to exceed 30 days.
Do not open or repair high-voltage battery components yourself. The guide warns that opening the battery assembly risks damage and personal injury, including electrocution. For general guidance on choosing a shop, see how to find a qualified EV repair shop.
How to avoid losing your coverage
Ford’s guide ties coverage to how you care for the car. In summary:
- Follow the maintenance schedule in the owner’s manual and keep your receipts.
- Install high-voltage battery software updates within 30 days of availability. Ford suggests keeping Automatic Updates on.
- Use the vehicle and charging equipment as described in the owner’s manual, and avoid incompatible charging devices.
- Follow the owner’s manual advice under “Preserving Your High Voltage Battery” and its storage instructions.
- Do not leave the battery at or near empty for more than 14 days.
- Act on warnings promptly.
- Have all battery service done by an EV Certified Ford dealer.
The guide does not say that fast charging automatically voids the warranty. What it excludes is using incompatible charging devices or methods, so follow Ford’s charging guidance for your model.
Is the 8-year warranty enough?
It is substantial, but it does not remove every financial risk. Damage from an accident, fire or flood can happen inside the warranty period and is excluded. Once the 8 years or 100,000 miles run out, you pay for repairs the warranty would have covered, and Ford Protect does not extend battery coverage. Think of protection in three parts: the manufacturer warranty for defects and excessive capacity loss, insurance for accidental damage and other insured losses, and regular maintenance and prompt attention to warnings.
Frequently asked questions
How long is Ford’s EV battery warranty? Ford’s 2024 warranty guide gives 8 years or 100,000 miles, whichever comes first, for the Electric Vehicle Component coverage, which includes the high-voltage battery.
What is the 70% rule? Ford considers capacity loss excessive when an authorized EV Certified dealer determines the battery holds less than 70% of its beginning-of-life capacity (65% for cutaway and chassis-cab configurations). Ford decides the measurement method.
Will Ford replace my battery if it drops to 80%? Not under the capacity rule, since 80% is above the 70% threshold. A separate defect could still be covered.
Does the warranty cover accident damage? No. Accidents, fire and flooding are excluded. Insurance may respond, depending on your policy.
Does the warranty transfer to a second owner? Ford’s guide says buyers of a previously owned vehicle are eligible for any remaining coverage. It does not restart. A salvage or total-loss history voids the warranty.
Can I extend the battery warranty? Ford’s guide says the high-voltage battery assembly is not eligible for any extended warranty plans or packages, including Ford Protect.
Is the F-150 Lightning still covered? Production has ended, but reporting based on Ford’s statements says existing trucks keep their warranty coverage and service support. Check your own warranty documents.
Can an independent shop repair the battery under warranty? Ford’s guide says repairs to the high-voltage battery assembly must be done by an EV Certified Ford dealership, and that repairs by facilities not authorized by Ford are excluded from coverage.
Sources
- Ford: 2024 Model Year Battery Electric Vehicle Warranty Guide (E-Transit, Mustang Mach-E, F-150 Lightning), copy hosted by manuals.plus
- autoevolution: Ford Pulled the Plug on the F-150 Lightning but Tells Owners Not To Worry
- Your own vehicle’s Ford warranty guide and owner’s manual
This article is for general education only and is not legal, insurance or financial advice. It summarizes Ford’s 2024 model-year U.S. warranty guide; terms vary by model year, vehicle and country and can change. Confirm your coverage with your warranty guide, an EV Certified Ford dealer and your insurer.