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]