中国实施了电动汽车动力电池耐久性国家标准，为消费者关心的电池衰减问题划定了明确的性能底线。1该标准规范了车载显示的电池可用能量状态要求，要求读数与实际测量值的偏差不超过5%，虚拟里程折算值与实测值的相对偏差也不超过3%。1
针对轻型乘用车，标准明确了分阶段的电池衰减指标。1车主使用5年或行驶10万公里后，电池可用能量状态应保持在82%以上；8年或16万公里时要达到75%以上；10年或20万公里时则要达到70%以上。1
目前发布的为推荐性国家标准，有望在全行业推广使用，促进电池技术创新和产业质量升级。1
China has implemented a national standard governing the durability performance of electric vehicle power batteries, establishing requirements for battery available energy state display in vehicles and setting minimum performance degradation thresholds.1 The standard mandates that on-vehicle displays of available battery energy state must not deviate from actual measurements by more than 5%, while the virtual mileage calculation must align with real-world values within a relative error margin of 3%.1
For light-duty passenger vehicles, the standard specifies that battery available energy state should retain at least 82% after five years or 100,000 kilometers of use.1 After eight years or 160,000 kilometers, batteries must maintain no less than 75%, and by ten years or 200,000 kilometers, they should preserve at least 70%.1 Currently released as a recommended national standard, the specification is expected to be widely adopted across the industry in the future, driving advances in battery technology innovation and quality improvements throughout the sector.1
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