Battery condition is the single biggest uncertainty when buying a used electric vehicle. Because pack health strongly affects range, value and future costs.
Replacement or major repair of an EV battery can cost thousands and can represent a very large share of a vehicle’s residual value. So independent insight into pack condition reduces buyer risk.
EV All Day offer
EV All Day’s new product provides an instant, low-cost report for UK-registered used EVs using only a registration number and mileage.
The PDF report (priced at £9.99) estimates the vehicle’s current battery health, usable capacity, and likely real-world range. And it shows the remaining manufacturer warranty where applicable.
Data sources and partners
EV All Day states its output is powered by aggregated EV intelligence from ClearWatt and EV Database, combined with official MOT and mileage records (DVSA).
ClearWatt is a hardware-free battery analytics platform that produces EV Health and EV Check-style reports. It uses connected-car signals and telematics to estimate degradation and real-world range.
How the check works
Buyers enter a UK registration and current mileage. EV All Day verifies eligibility before payment and pre-fills mileage from the latest MOT where available.
After purchase the report is delivered on-screen, by email, and as a downloadable PDF; a refund is offered if the vehicle cannot be assessed.
Contents of the report
- Estimated battery health percentage and usable capacity compared to factory spec.
- Predicted real-world range (scenario-based).
- Remaining manufacturer battery warranty and eligibility indicators.
- DVSA MOT history and recorded mileage entries.
- Vehicle specification and ownership signals drawn from EV Database and other partners.
How EV All Day positions the product
EV All Day frames the report as an independent screening tool for pre-purchase checks rather than a replacement for workshop-level diagnostics. The company stresses the output is an estimate derived from real-world datasets, not a direct OBD measurement of every cell.
Practical use cases
- Private buyers: screen ads and shortlist cars before traveling to view them.
- Private sellers: demonstrate battery condition to support asking price.
- Dealers and traders: speed up appraisal and provide consistent, comparable assessments across inventory.
- Fleets and lease returns: rapid triage to identify vehicles needing deeper diagnostics.
How this fits the wider market
ClearWatt and other specialist providers have already introduced hardware-free and guided-drive battery tests to add transparency to the second-hand EV market.
Regulated records (MOT/DVSA) and specialist EV-data platforms increasingly combine to close information gaps that once left buyers reliant solely on seller statements.
Alternatives and complements
ClearWatt app: Deeper owner-driven health tests that use recorded drives and phone telematics to produce a more detailed EV Health Report (ClearWatt’s one-off premium test is priced higher and may require recorded trips).
Dealer diagnostics: Workshop-level OBD and module-level tests that can reveal fault codes and cell-level anomalies; these are more invasive and costly but more precise.
Other market offerings: Startups and service providers (e.g., vsNEW, Altelium and others) offer battery reports, inspections and certificates aimed at dealers and large networks.
Limitations and important caveats
Estimated, not measured: EV All Day’s report is modelled from aggregated data and historical records, so results are probabilistic rather than a direct cell-by-cell measurement.
Edge cases: Vehicles with limited public records, aftermarket modifications, or incomplete MOT history may return no result or less-accurate estimates. EV All Day states it refunds where data is unavailable.
Deeper faults: Structural pack issues, module imbalance, or intermittent faults can require garage-level diagnostics that aggregate reports cannot detect.
Quick implementation checklist
- Gather the vehicle registration and current mileage.
- Check for recent MOT entries (confirm mileage history where possible).
- Purchase the EV All Day report (£9.99) and download the PDF.
- Review battery-health percentage, usable capacity and predicted range.
- Verify remaining warranty information and any flagged risks.
- If results look borderline, arrange a dealer or OBD-level diagnostic for confirmation.
- Use the report when negotiating price or when deciding whether to view/test-drive the car.
Recommendations for buyers and trade
Buyers should treat instant modelled reports as an efficient first filter; rely on them to prioritise viewings and to ask targeted questions of sellers.
Dealers should combine such reports with a physical inspection or OBD check where reports flag elevated risk.
Final product context
EV All Day’s service is a low-cost entry point to battery transparency for the UK market, aimed at increasing confidence in used EV transactions.
It complements deeper, higher-cost tests from specialist providers like ClearWatt, and sits alongside evolving industry standards for battery reporting and pre-owned EV certification.
Sources: EV All Day
