DIRECT ANSWER
Make the decision from one identified vehicle.
Battery evaluation combines identity, diagnostics, physical condition and a documented charge. A dashboard range estimate is not a battery-health certificate.
Keep the market context attached to every claim. Production date, propulsion, configuration and destination can change what an advertised number means. Mark facts as verified, seller-stated or still open; official model literature never proves the equipment or condition of a particular used vehicle.
EVIDENCE FILE
Records that change the answer
Start with battery label and serial context and link it to the VIN before accepting translated trim names or catalogue photographs. Add underbody and enclosure photographs so condition or equipment claims can be checked against the actual car. The remaining records establish how the vehicle operates, how it has been treated and whether the proposed route is credible.
- battery label and serial context
- underbody and enclosure photographs
- diagnostic scan with state and temperature
- charger session record
- destination connector and grid assessment
Give each record a capture date and a defined scope. Diagnostics taken before repair, charging evidence from another car or freight priced to a different port cannot support the present decision. A replacement VIN starts a new evidence chain rather than inheriting the first candidate's file.
DECISION TEST
Test the route, not the brochure
Run a charge from a recorded starting state using a known charger. Note energy delivered, time, temperature, interruptions and final state. A failed session must be separated into site-side, cable-side and vehicle-side causes.
Prefer the vehicle whose identity and operating limits can be demonstrated with current records. Put a cost or condition beside each unresolved item instead of concealing it in a general assurance.
Inspection scope should follow the decision. For this route, check identify battery and charging hardware by version, then inspect enclosure, cooling and connectors. Continue with record diagnostic warnings and cell data when available and record test AC and DC behaviour under stated conditions. Measurements, photographs, diagnostics and test conditions are more transferable than labels such as “excellent,” “full option” or “export ready.”
Risk boundary
Adapters are often marketed as universal. Mechanical fit does not prove communication, safe current, local approval or reliable thermal performance.
A known shortcoming can be accepted when its consequence, remedy and price are visible. An untested claim is different: keep it open in the quotation and link payment timing to the check that can close it.
VEHICLE-SPECIFIC WORKSHEET
Apply this check to the candidate
Record charger identity, ambient temperature, starting state of charge, delivered energy, elapsed time, peak power, interruptions and final state. Repeat only when the first test cannot separate vehicle behaviour from site behaviour. For DM-i, add engine-start logic and hybrid warnings rather than treating the smaller traction battery as a simpler inspection.
Close the worksheet with a short decision memo for BYD Sealion 06 Battery Health and Charging Guide. State how “identify battery and charging hardware by version” was verified, what record supports “battery label and serial context,” and who remains responsible for “test AC and DC behaviour under stated conditions.” Add the date, candidate VIN, destination and any condition attached to acceptance. If “diagnostic scan with state and temperature” is missing or belongs to another vehicle, leave the conclusion open and price the uncertainty. This memo gives the inspector, buyer, logistics team and destination adviser the same boundary instead of allowing each participant to assume a different version of the purchase.
DESTINATION CONTROL
Carry the same facts through export
State battery chemistry, capacity, charge-port type and vehicle condition accurately for shipping. Confirm port and carrier rules before arrival at the terminal.
Before collection, read vehicle identity, propulsion, value and trading parties across the commercial and shipping drafts. Destination acceptance and carrier acceptance must both be checked; customs release alone is not proof that road registration will follow.
State where the cost calculation ends and when it was prepared. Include vehicle preparation, inland logistics, freight, insurance, duties, taxes, compliance, storage, destination transport and initial service as applicable, while keeping unconfirmed charges visibly contingent.
BUYER QUESTIONS
Questions to settle before payment
Does displayed range prove battery health?
No. It is influenced by recent use and software assumptions.
Should a used EV receive a DC test?
Where safe and practical, a documented AC/DC assessment is valuable.
Is DM-i battery inspection less important?
No. The traction battery remains central to hybrid operation and value.
PRIMARY REFERENCES
Verify the current market version
BYD lists the current China-market vehicle through separate official Sealion 06 EV and Sealion 06 DM-i pages. Official pages describe the model family; the candidate still needs VIN-linked verification, and destination rules require separate confirmation.