USED EVs with a battery health certificate sell 7.3 days faster on average than those without, says certificate provider Generational.
Its new analysis, released at the start of the BVRLA’s used EV week (20-24 October), reveals that over the past six months, used EVs accompanied by its battery health certificate sold 7.3 days faster on average than those without – taking 43.1 days to sell, compared with 50.4 days for uncertified vehicles. This has been benchmarked against the latest available industry sales data across the period.
A Generational certificate provides verified information on a vehicle’s battery condition, its real-world range and remaining warranty.
It says that the findings underscore a growing appetite among consumers for clear, accurate and reliable information on the health of EV batteries and that battery health is proving to be as crucial as mileage has been to ICE vehicles – a shift that is already accelerating transactions and unlocking greater value for both retailers and customers.
“With transparent, trusted battery health data in hand, buyers can make quicker, more confident decisions, and dealers can sell vehicles faster and more profitably. It’s a win-win – and a key part of building a healthy, sustainable market for used EVs.”
Oliver Phillpott, CEO Generational Tweet
Generational says that its proprietary battery health testing technology requires minimal training, guided by an intuitive mobile app. The compact device connects directly to an EV’s OBD port to securely analyse battery data and produce a clear, digestible state-of-health certificate.
EV stock calculator for retailers
Generational has also released its Impact Calculator for retailers – analysing the number of EVs in stock, gross margin per unit, average days to sell, daily stock ownership cost, and accounting for poor-quality vehicles. Using these inputs, the calculator gives retailers the ability to assess the additional gross margin – and savings from reduced vehicle holding cost and reduced risk – that could be gained annually with the power of battery health testing.
The business’ Impact Calculator can be accessed on the Generational website here.

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