End of Life (EoL) refers to the state in which a battery is considered no longer suitable for its original use after reaching the predetermined performance degradation limit or safety critical threshold. At this point, although the battery may still have some storage capacity, it cannot meet the original requirements for efficiency, capacity, or reliability.
The significance of EoL in the industry:
For electric vehicle manufacturers: Establishing warranty policies and recycling plans
For energy storage system operators: Conducting asset evaluation and developing replacement strategies
For battery manufacturers: Optimizing design to delay EoL and providing EoL prediction algorithms
