European researchers have developed a new system enabling electric vehicle batteries to monitor their own degradation in real-time. This technology identifies hidden faults within individual battery cells, offering a significant advancement in battery management. Currently, assessing battery health requires external testing, which is both time-consuming and costly. The new system provides continuous, internal diagnostics, potentially extending battery lifespan and improving vehicle performance. This self-monitoring capability could also enhance safety by detecting potential issues before they escalate. The innovation promises to increase consumer confidence in electric vehicle technology and facilitate more efficient battery maintenance and recycling processes.