It is difficult to judge the battery health status of hybrid electric vehicles. There are many ways to measure batteries. For example, the health status of the battery can be preliminarily judged by measuring the internal resistance and discharge capacity.
Generally speaking, the health status of electric vehicle batteries is judged by the storage capacity, that is, the gap between its current capacity and its nominal capacity is tested. To put it bluntly, it depends on how many kilowatt hours can be charged. The more charging degrees, the less battery capacity attenuation, the more mileage and the higher battery health.