EV battery testing and analytics company ClearWatt has partnered with EVA England to  improve buyer confidence in used EVs.

The partnership will give EVA England members access to ClearWatt’s tools to test EV battery health and performance, along with a number of additional data points designed to instil confidence.

ClearWatt recently launched its EV Health Test to enable consumers and businesses to evaluate real-world battery range using only a smartphone and the ClearWatt mobile app.

The app collects real-time performance data and combines it with more than 50 additional data points, delivering a detailed and user-friendly report. This includes insights into home and public charging costs, the impact of alloy wheel specifications on range, tax and exemption data and more.

The UK’s second-hand EV market has grown rapidly over the past few years, with EVs reaching the end of leases and entering the marketplace at unprecedented scale. The first quarter of 2025 saw sales of used battery electric cars increase by 58.5% to 65,850 units, taking a record 3.3% share of all transactions.

But second-hand models have faced issues arising from a lack of standardisation and transparency across the pool of available cars, leading to low residual values and confidence in the market.

Values of second-hand BEVs have fallen by more than 50% over the last two years, and are forecast to fall a further 28% by 2030, prompting the BVRLA to call on the Government recently for urgent action, with the campaign also supported by fleet operators, trade bodies and vehicle rental and leasing companies.

By partnering with EVA England, ClearWatt aims to help improve confidence levels among the public, in turn helping the used EV market to mature and grow.

Patrick Cresswell, co-founder and managing director of ClearWatt, said: “Battery health and uncertainty about EV performance remain some of the most important – and misunderstood – factors in used EV buying. By working together [with EVA England], we can give drivers the clarity and confidence they need to make better decisions and accelerate the shift to electric.”

Vicky Edmonds, CEO of EVA England, commented: “We hear time and again from drivers that battery uncertainty is one of the biggest barriers to buying a used EV. Our partnership with ClearWatt will help tackle that head-on, giving consumers the information they need to make confident, informed decisions.

“Their transparent, data-led approach is exactly what the market needs, and we’re proud to be working alongside them to help give drivers greater confidence in second-hand EVs.”