Dealer buyer guide
How to inspect the battery health of a used electric car
Direct answer
Use a dated, vehicle-linked battery assessment alongside service records, fault checks and a physical inspection. A displayed range or a single state-of-health number is not a complete condition report.
Procurement verification checklist
| Check | Record to obtain |
|---|---|
| Identity | VIN, mileage, pack identification and test date |
| SOH evidence | Reported percentage, method, tool and whether estimated or measured |
| Conditions | Temperature, state of charge, test scope and limitations |
| Findings | Fault codes, underbody damage, repair history and unresolved issues |
| Decision | Document acceptance, repair requirement or rejection; missing data is not a pass |
Open the reusable vehicle evidence template →
Practical steps
- Request the VIN, odometer, first-registration date, service and repair history, battery warranty terms and known battery replacements. Compare dates and mileage across the records.
- Have a qualified technician inspect the pack exterior and underbody for damage or repair evidence and read diagnostic trouble codes. Do not open the high-voltage battery as part of a buyer check.
- Request the diagnostic or independent battery report, including test method, tool, date, conditions and limitations. Distinguish the BMS estimate from a measured capacity test.
- Review charging behaviour and any available capacity assessment together. Record unresolved faults and obtain a repair or rejection decision before contracting.
Evidence and limits
Ask whether an independent test supports this exact model and battery.
A report describes the test date; it does not guarantee future capacity. Missing evidence must be recorded as unavailable, not as a pass.
Confirm current requirements with the relevant authority, technical service and carrier for the exact VIN and destination before purchase or shipment.
Sources and verification
External sources support the guidance; they do not verify GEVS stock or endorse this business. Read our evidence and correction standards.
Continue your research
- Inspection and delivery evidence
- Used BYD Seal Wholesale from China — 2026 Buyer Guide
- What is the difference between GB/T and CCS2?
Update log
2026-11-05: Added a structured procurement checklist and links to the evidence template and publication standards. This editorial update is not a vehicle inspection date.
2026-11-04: Published the buyer checklist and source references. No live vehicle, battery result or freight quotation is asserted.
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