A digital dataset recording the battery's model, chemical composition, capacity, manufacturing information, carbon footprint, recycled content, etc., accessible via a QR code printed on the battery. The obligated party is the economic operator placing the battery on the EU market; if the battery is installed in your complete vehicle for export, the buyer will ask you for this data.
Full explanation and HS code list: https://patisco.com/zh/eu-check/battery-passport Check which EU regulations apply to you using your HS code: https://patisco.com/zh/eu-check