Sourced fact
A professional report is appropriate when the decision is material and existing battery evidence is generic, incomplete or conflicting.
Used EV evidence · UK
When to commission a professional battery SoH report
Commission a professional SoH report when battery condition could materially change a purchase, warranty or fault decision. Do so when existing evidence is missing, generic or conflicting. The report should identify the vehicle, date, method, reference, conditions, stored faults, limitations and issuer competence. Producing the diagnostic report is ProfessionalOnly, so keep all technical testing with a competent EV high-voltage technician.
Reviewed
Key facts and evidence
For a UK used-EV decision, as of 13 August 2026, commission a vehicle-specific SoH report when generic, missing or conflicting evidence could change the outcome. E3 classifies production of that diagnostic report as Red and ProfessionalOnly. The resulting metric remains bounded by its stated method and cannot certify every aspect of pack safety or future performance.
Sourced fact
The written result should identify the vehicle, mileage, date, conditions, method, metric, reference, faults, limitations and issuer.
Sourced fact
E3 reserves production of a traction-battery diagnostic report to a competent EV high-voltage technician.
Sourced fact
A report is purchasing evidence rather than proof of every safety condition or future battery outcome.
Commission a vehicle-specific professional report when battery condition materially affects the decision and existing evidence is missing, generic or conflicting.
Commission when uncertainty is material
Escalate when the purchase price, warranty route or fault decision depends on battery condition and the available material is only a cohort estimate, dashboard prediction, generic model result, unexplained percentage or conflicting report.
Specify the written deliverable
Request vehicle identity, mileage, date, state of charge, temperature and test conditions, method and tool or software version, metric and manufacturer reference, stored faults, limitations and issuer competence.
Official safety boundary and date
E3 verified the OZEV evidence source and HSE electric-vehicle safety source on 12 August 2026. HSE's page was updated on 8 May 2025, and E3 classifies report production as Red and ProfessionalOnly.
Next step and limit
Give the technician the exact vehicle and decision question, then ask for an explained written result. The report can improve evidence quality, but E3 row e3-s11-008 says it does not prove every safety condition or fix future capacity.
What to do next
The need for a report does not itself determine roadworthiness, and this page provides no permission to drive.
Immediate action: Arrange the assessment with a competent EV high-voltage diagnostic technician.
- Stop consumer involvement when the assessment goes beyond normal owner displays or document collection.
Do not infer from missing evidence
- Keep diagnostic production and technical testing entirely within the competent technician's scope.
- Do not treat a seller screenshot, cohort estimate or unexplained percentage as a substitute report.
Professional hand-off
- Commission a competent EV high-voltage diagnostic technician who uses vehicle-specific manufacturer procedures and suitable approved equipment.
- Ask the issuer to provide and explain a written report meeting E3 row e3-s11-008 before the evidence influences the decision.
Questions this record can answer
What does the sourced evidence say about commission when uncertainty is material?
Escalate when the purchase price, warranty route or fault decision depends on battery condition and the available material is only a cohort estimate, dashboard prediction, generic model result, unexplained percentage or conflicting report.
What does the sourced evidence say about specify the written deliverable?
Request vehicle identity, mileage, date, state of charge, temperature and test conditions, method and tool or software version, metric and manufacturer reference, stored faults, limitations and issuer competence.
What does the sourced evidence say about official safety boundary and date?
E3 verified the OZEV evidence source and HSE electric-vehicle safety source on 12 August 2026. HSE's page was updated on 8 May 2025, and E3 classifies report production as Red and ProfessionalOnly.