Used EV Battery Health: New Data Shows Wide Variation in Degradation

When shopping for a used electric car, the condition of the high-voltage battery is often a major concern. To address this, Austrian company Aviloo has evaluated more than 500,000 battery tests, revealing that capacity loss among used EVs is far from uniform.

According to Aviloo’s analysis, battery health can differ dramatically depending on factors like the vehicle’s age, usage patterns, and how the battery was charged. Some batteries retain most of their original capacity even after years of service, while others degrade more quickly. This variability highlights the importance of checking the actual battery condition rather than relying on general assumptions.

Aviloo provides a manufacturer-independent battery test service, and its data underscores that a professional assessment is crucial before buying a used EV. The company’s findings help demystify battery degradation, offering buyers a clearer picture of what to expect and helping them make smarter purchasing decisions.