BCA’s Battery Health Grading boosts EV confidence as used market accelerates
A year after launching its pioneering Battery Health Grading service, BCA says the initiative is transforming transparency in the UK’s used electric vehicle (EV) market — delivering measurable benefits for both buyers and sellers.
Since its introduction in 2024, BCA’s battery grading technology has produced strong commercial results, improving time-to-sale, boosting buyer engagement, and lifting values across tens of thousands of transactions.
The company reports a £258 (1.4%) uplift against guide price and a 2.7-day reduction in time-to-sell across more than 22,000 battery-graded EVs since launch. Sale conversion rates have also improved by 6.5% compared to the pre-launch period, with graded vehicles consistently outperforming ungraded equivalents.
Momentum has continued to build through 2025. Between 1 July and 30 September, graded EVs achieved an average £365 (2.1%) uplift against guide prices and a 10.2% improvement in conversion rates, underlining the long-term impact of transparent battery data on buyer confidence and residual values.
“Battery transparency is critical to building trust in the used EV market,” said Stuart Pearson, Chief Operating Officer at BCA.
“Our grading system provides the clarity that buyers need and the confidence sellers want, helping to drive stronger residual values and faster sales.”
Launched in partnership with AVILOO, BCA’s Battery Health Grading system uses the FLASH Test to provide an independent, data-driven measure of an EV’s State of Health (SoH). The results are presented as a simple A–E grade, alongside the battery’s precise health percentage.
The grading is based on the battery’s energy storage capacity relative to its original design, allowing buyers to make quick, informed comparisons between vehicles.
This level of transparency — previously unavailable at scale in the UK’s remarketing sector — has rapidly become a defining feature of BCA’s EV proposition. It allows both retail and trade buyers to bid with greater confidence, while sellers benefit from higher conversion rates and stronger prices.
Pearson said the initiative has also been instrumental in addressing one of the key barriers to used EV adoption: uncertainty over battery condition.
“The battery is the single most expensive component in an EV. By giving buyers a verified snapshot of its health, we’re removing much of the risk and guesswork that has traditionally slowed down the used market,” he added.
The success of the grading service has helped reinforce BCA’s position as the UK’s largest remarketing platform for used EVs.
The company transacted over 26,000 used electric vehicles in the first half of 2025 and expects to exceed 50,000 units by year-end — more than any other remarketing provider in the country.
This surge in volume reflects the rapid acceleration of the UK’s EV market, as more fleets and consumers transition from petrol and diesel to electric power. It also signals growing confidence in the secondary market, where reliable data on battery performance is now seen as essential.
BCA’s success with Battery Health Grading is likely to set a new benchmark for the remarketing sector. Analysts say the company’s standardised grading framework could become the industry norm as other operators look to replicate its impact on pricing and consumer confidence.
For BCA, the next step is likely to involve expanding battery transparency tools across more models and brands, as well as refining data integration with manufacturer systems and fleet management platforms.
Pearson concluded: “We’re at a pivotal point for EV adoption. The used market must inspire the same confidence as new sales — and battery grading is the key to unlocking that. By delivering measurable results, we’re helping build a sustainable ecosystem for electric vehicles.”
