The reporter learned today that the General Administration of Market Regulation recently issued the national standard “In-Service Inspection and Testing Method for Electric Vehicle Power Batteries”, which will be officially implemented on March 1, 2027. The standard applies to the testing of electric vehicle power batteries in service, covering application scenarios such as battery hazard investigation, used car transactions, and functional testing. The standard stipulates general test conditions for power batteries in service, clarifies test items such as appearance, air tightness, insulation, and thermal management systems, and gives methods for estimating the consistency of usable capacity retention rate, voltage, and internal resistance. The release of this standard solved the problem of lack of a unified test method for testing NEV power batteries in service, improved the transparency of battery technology and transaction information, protected consumers' rights and interests, promoted standardized operation of the NEV aftermarket, and empowered the high-quality and sustainable development of the NEV industry through standardized testing and testing methods.

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