Battery condition is the single most important — and most expensive — variable in a used EV. Ask for a State of Health (SOH) report: in China, dealers and authorized service centers can read it via the manufacturer diagnostic system. It shows remaining capacity as a percentage of the original. Rule of thumb: above 90% is excellent, 85-90% is acceptable for the price, below 80% needs a serious price cut or battery refurbishment. Also get the battery's full charge and discharge history (次数) — a 3-year-old car with 800 fast-charge cycles has lived a harder life than one with 200. Physically, inspect the battery pack enclosure on a lift for dents, corrosion, or coolant leaks. Check that DC fast charging works during a test charge. Finally, verify the battery is not covered by an open recall or replacement program — this is both a risk and sometimes a free upgrade.

This is one of the most common disappointments after importing a Chinese EV, so check before you buy. Many Chinese EVs rely on an embedded SIM that only works on Chinese carrier networks. Once the car leaves China, remote functions — battery status, pre-conditioning, charging control, and locating the car — may stop working entirely. Some brands let you transfer the account to a foreign phone number, but many require a Chinese ID or Chinese phone number for registration, which you cannot provide. What to do before purchase: ask the exporter to test the app functions live on video while the car is still in China, including remote air-conditioning and battery percentage reading. Ask the brand's official customer service (in writing) whether overseas account activation is supported for your specific model and year. Workarounds if the official app does not work: some functions may still operate locally through the car's own settings, such as scheduled charging from the dashboard. Third-party OBD dongles with companion apps can sometimes restore battery monitoring and pre-conditioning. The car itself drives fine without connected services, but if app functionality matters to you, treat it as a purchase criterion, not an afterthought.

We thoroughly rule them out by checking if the cabin wiring harness is melted, if the seat belts have water stains or mold, if there is unusual rust or debris in the seat tracks and cigarette lighter, and by verifying with the insurance company for any "total loss claims." These two types of cars are an absolute sales ban for us.