The State Administration for Market Regulation has recently promulgated the national standard, Test Methods for In-Service Testing of Electric Vehicle Power Batteries. This standard is set to take effect officially on March 1, 2027. It is specifically tailored for the evaluation of power batteries currently in use in electric vehicles, encompassing a broad spectrum of applications such as hazard identification in batteries, transactions involving used electric vehicles, and comprehensive functional testing.

The standard meticulously details the general testing conditions applicable to power batteries in active service. It enumerates a variety of testing items and furnishes precise estimation methodologies for assessing the available capacity retention rate, voltage stability, and internal resistance consistency of these batteries. By establishing a unified testing framework, this standard effectively fills the existing gap in the evaluation of power batteries in new energy vehicles during their operational phase.

Its implementation is poised to significantly enhance the transparency surrounding the technical conditions and transactional information of these batteries. This, in turn, will offer robust protection for consumer rights, foster standardized practices within the aftermarket for new energy vehicles, and provide indispensable support for the high-caliber, sustainable growth of the new energy vehicle sector.