On December 18, 2024, the Shanghai Municipal Bureau of Market Regulation issued a voluntary local standard “Cascading use※ of automobile traction battery-Operation requirements for energy storage systems” (DB31/T 1525-2024). The standard applies to medium- and small-sized user-side energy storage systems that use discarded automobile traction batteries in Shanghai. The standard will come into effect on April 1, 2025.
※Cascading use: The process of using discarded automobile traction batteries in the form of modules or single cells that can be reused as backup power for base stations, energy storage, and low-speed power after going through related processes such as disassembly, classification, inspection, reassembly, reconfiguration, and assembly.
Shanghai issues local standard to specify the requirements for cascading use of automobile traction battery