Buying an electric vehicle (EV) is an exciting step — lower running costs, reduced emissions, and the latest driving technology. But one of the biggest questions drivers often have is: what about the battery?

At County Garage, we’re proud to eliminate the uncertainty. From September 2025, every EV we sell will come with a Generational+ Battery Health Certificate, giving you complete transparency and confidence in your purchase.

The battery is the most valuable component of an EV — it makes up the majority of the car’s value. Yet unlike mileage, which is easy to check, battery health depends on how the vehicle has been used.

Research shows that factors like:

• Age of the battery
• Average charge levels
• Frequency of rapid charging
• Driver behaviour
• Deep discharges

…all influence long-term performance. In other words, mileage alone is a poor predictor of EV health.

That’s why a certified, independent test makes all the difference.

A Battery Health Certificate is a simple, independent report generated using advanced OBD diagnostic testing. The process takes just a few minutes and provides instant results, including:

• State of Health (%) – how much capacity remains vs when new
• Battery capacity (kWh) – usable energy available
• Estimated real-world range – under summer and winter conditions, for urban, mixed, and motorway driving
• Battery warranty coverage – how much time and mileage remains under manufacturer cover
• Digital verification – scannable QR code for added transparency

For example, a recent MG ZS EV sold at County Garage showed a 94% state of health with an estimated real-world summer urban range of 235 miles — backed by nearly 7.5 years of warranty still remaining.

Offering battery health certificates on every EV means:

• Confidence – You’ll know exactly how your EV battery is performing today.
• Transparency – Independent testing you can verify with a QR code.
• Peace of mind – No hidden surprises, just clear data.
• Future value – When you resell or part-exchange, having a certificate makes your EV more attractive to the next buyer.

Dealerships across the UK using these certificates have seen faster sales, higher buyer confidence, and even a 300% increase in ad views on certified EVs.

Buying electric should be exciting — not uncertain. With Battery Health Certificates included as standard on all EVs, County Garage ensures every customer gets the reassurance they deserve.

Thinking of going electric? Browse our current EV stock and see for yourself how easy and transparent it can be to make the switch.

County Garage, Herne Bay
Explore our EVs here
01227 374939