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How long do EV batteries last?

EV batteries degrade gradually rather than failing suddenly. What matters for a buyer is the warranty, how the car has been charged and used, and the chemistry.

Warranty: what to expect

Most manufacturers warrant the battery for around eight years or 100,000 miles (some are seven), usually to a minimum capacity such as 70%. The battery warranty is separate from the vehicle warranty and from your legal rights, and may have servicing conditions. It usually does not cover damage.

What affects lifespan

• Chemistry: LFP batteries generally have a long cycle life and are designed to be charged to 100% regularly. Many nickel-based batteries are best kept between about 20% and 80% day to day, with 100% for long trips. Your handbook or app will say which applies.
• Rapid charging: frequent DC rapid charging can accelerate wear compared with slower charging.
• Heat and cold: extreme temperatures affect both range and long-term wear. Preconditioning while plugged in helps.

What the repair data says

Warrantywise reports that drive-battery problems do not appear among the five most common EV repair requests in its data, though that data covers used cars only, and software, sensors and diagnostics are important repair areas. See the Index explained.

Before you buy, ask

• How many years, miles and what capacity threshold does the battery warranty cover?
• Are there servicing or charging conditions?
• What is the battery chemistry of this exact car?

Frequently asked questions

How long do EV batteries last?

Batteries typically degrade slowly. Most manufacturers warrant them for at least eight years or 100,000 miles, usually to a minimum capacity of around 70 percent. Warrantywise reports that drive-battery problems do not feature among the five most common EV repair requests in its data, though that data covers used cars only.

What does an EV battery warranty usually cover?

Typically eight years or 100,000 miles, covering loss of capacity below a stated level, often 70 percent. It usually does not cover damage, and servicing conditions may apply. Read the terms: the battery warranty is separate from the vehicle warranty and from your legal rights when buying.

Should I charge my EV to 100 percent?

Follow the manufacturer's advice for your car. Many nickel-based batteries are best kept between roughly 20 and 80 percent for daily use, with 100 percent for long trips. Many LFP batteries are designed to be charged to 100 percent regularly. Your handbook or app will say which applies.

Related

• EV battery types: LFP, NMC and sodium-ion
• Are EV batteries a fire risk?
• Buying a new electric car: your rights
• The Warrantywise Reliability Index explained

Figures compiled September 2026 from published UK sources and are approximate. Page reviewed 2026-09-20. General information, not financial, legal or technical advice.