China's "Interim Measures for the Administration of Recycling and Comprehensive Utilization of Waste Power Batteries from New Energy Vehicles" (MIIT and five other departments, Order No. 73), effective 1 April 2026, made power battery coding under GB/T 34014 and labeling of cells, modules and packs an explicit mandatory provision, and in August 2026 the rollout of a "power battery digital identity card" system built on the 24-character code was made official. Because the 24-character code contains a manufacture date (3 characters) and a serial number unique within "the same specification on the same day" (7 characters), the line must fix the code on the day of production and issue, mark…