SOH (State of Health) measures the battery's remaining capacity as a percentage of its original capacity. Two EVs with the same mileage can have very different SOH depending on charging habits and climate exposure, and since the battery represents 30-50% of a used EV's value, the SOH number is effectively the real price tag. A proper certificate includes current SOH percentage, cell voltage balance, charge cycle counts, battery management system fault codes, and often a projected range estimate. In hot-climate markets like the Gulf, a degraded battery degrades even faster, so a documented SOH above 85-90% is strongly recommended. Exporters who provide verified SOH certificates close deals faster and command better prices, so treat the certificate as a core purchase document, not an extra.

A proper inspection relies on equipment, not just eyes. The inspector should use a paint thickness gauge to measure 50-60 points across body panels; original paint is typically 80-150 microns. An OBD diagnostic scanner reads stored and pending fault codes across all control units, and for EVs it also reads battery state of health and charge cycle counts. The car must go on a lift for the underbody check: frame rails, suspension components, oil leaks and accident repair marks are only visible from below. A battery tester checks starting voltage and charging system health, and a tread depth gauge documents tire condition. Ask for the report to include raw readings and dated photos rather than a simple pass/fail summary - that is what makes it verifiable.

A compliant shipment from China includes a standard document set. Verify you receive all of them before the ship departs, because correcting documents mid-transit is slow and expensive. The core set: commercial invoice, bill of lading (original, if your country requires presentation for customs), packing list, certificate of origin, and the export customs declaration. For used cars, also expect the Chinese registration certificate copy, deregistration proof, and a condition/inspection report. Some destinations require additional certificates — GCC states need GSO conformity, EU countries need COC or individual approval, several African nations require BESC/ECTN tracking numbers issued before loading. Your customs broker will typically need the invoice and bill of lading at minimum, plus proof of vehicle age and emissions where age limits apply. Ask your exporter for scanned copies the day the vessel sails, not when it arrives: pre-clearance can cut port storage fees significantly. One caution: the invoice value must match your payment records. Under-declaring to save duties is customs fraud in most countries and risks seizure.