IEC 6 2660-1 is a performance test standard for secondary lithium-ion batteries for electric road vehicle propulsion. The standard specifies the performance and life test method of lithium-ion batteries for electric vehicles (including pure electric vehicle BEV and hybrid electric vehicle HEV), covering key indicators such as capacity, Power density, energy density, cycle life, storage life, etc. The test content includes electrical performance, Mechanical Property and environmental adaptability, and aims to provide battery manufacturers and electric vehicle manufacturers with a unified test procedure to ensure the Reliability and safety of batteries in vehicle propulsion.