It's extremely difficult. Unauthorized modifications can lead to module current overload protection, resulting in a lock. In China, you need to use the factory online engineer account to reprogram it. It's basically impossible to perform online decoding overseas. We strongly warn against blindly modifying the electrical systems of modern integrated circuit vehicles.

A typical transaction has six steps. 1. Selection: you confirm the vehicle through photos, a video walkaround, an inspection report and the VIN. 2. Deposit: most exporters ask 20%-30% to reserve the car. Pay by bank transfer to the company's corporate account, never a personal one. 3. Inspection: an independent pre-shipment inspection verifies the condition; you receive the report before paying the balance. 4. Balance payment: usually due before loading. Request the booking confirmation and container number. 5. Shipping: the exporter sends you the draft bill of lading for checking, then the original documents by courier. 6. Arrival: you clear customs with the invoice, C/O, B/L and inspection certificate, then register the vehicle. Total timeline is usually 2-6 weeks. Use payment methods with recourse (T/T or escrow) and keep every contract and receipt.

Obtaining precise internal resistance at different SOC levels requires disassembling the battery pack and connecting it to a professional charge-discharge cabinet for several days of cycling tests. This is beyond the scope of non-destructive used car inspections; we only provide real-time estimated internal resistance data based on OBD port readings.