Can EV batteries be repaired or only replaced?

Most can be repaired. Single-module failures, cooling faults and BMS issues are all repairable by an IMI Level 4 specialist at a fraction of the cost of a full replacement.

How much does an EV battery cost to replace?

A full new battery from a dealer is typically £10,000–£25,000. An independent refurbishment is usually £3,000–£8,000. Module-level repairs are typically £400–£1,800.

How long do EV batteries last?

Modern EV batteries are designed for at least 8–10 years of normal use. Most fleet data shows EVs holding 85–90% of original capacity after 100,000 miles.

Is EV battery repair covered by warranty?

Most UK EVs have an 8-year / 100,000-mile battery warranty that covers any drop below 70% of original capacity. Check your handbook for the specific terms.

How do I find an EV battery specialist near me?

Search The EV Pros directory by postcode and filter for battery work. Each listing shows the technician's IMI level and Trust Score so you can pick a verified specialist with confidence.

EV Battery Repair UK | Replacement Specialists

EV Battery Repair & Replacement — UK Specialists

The high-voltage battery is the most expensive component in any electric car — and the one most owners worry about. The good news is that catastrophic battery failure is rare: most "battery problems" turn out to be a single faulty module, a cooling issue, or a software fault, all of which can be repaired by an IMI Level 3 or Level 4 specialist for a fraction of the cost of a full replacement. The EV Pros directory lists UK battery specialists who can diagnose, repair, rebalance and (where necessary) replace EV batteries safely.

Repair vs replacement: when is which appropriate?

Most issues described as "battery faults" fall into one of three categories:

Single module failure. One of the dozens of modules inside the pack has degraded. The faulty module is replaced; the rest of the pack is balanced. Cost: usually £400–£1,500.
Cooling system fault. A leak, blocked passage or failed pump causes thermal warnings. Often £200–£600 to fix.
Whole-pack degradation. The pack as a whole has lost significant capacity (typically below 70%) and a full replacement or major refurbishment is needed. Cost: £3,000–£20,000+ depending on the vehicle.

Always get a proper diagnostic before agreeing to any major work. A reputable specialist will share the battery management system's full health report.

How much does an EV battery repair cost?

Indicative UK prices (2026):

Module-level rebalancing: £400–£900
Single module replacement: £700–£1,800
Cooling pump or coolant repair: £300–£700
BMS (battery management system) replacement: £600–£1,400
Full pack refurbishment / reconditioning: £3,000–£8,000 (depending on model)
Full new battery (dealer): £10,000–£25,000 depending on the car

Signs your EV battery may need attention

Sudden drop in range that doesn't recover after a full charge
"Reduced power" or "service battery" warnings
Slower DC fast-charging than usual
Persistent yellow / orange battery icon
One charge cycle showing very different range than the next

Any of these is worth booking a diagnostic. Most independent EV specialists will run a full battery health report for £80–£150 and credit it against repair work.

Is it covered by warranty?

Most UK EVs come with an 8-year / 100,000-mile battery warranty that guarantees no less than 70% of original capacity. If your pack drops below that within the warranty period, the manufacturer typically replaces or refurbishes free of charge. Outside warranty, an independent IMI Level 4 specialist is usually 30–60% cheaper than the main dealer.