Energy storage battery life 80

The findings reveal that most EV batteries retain more than 80% of their capacity even after 200.000 kilometres, proving their resilience and long-term value. Concerns about EV battery degradation have led to widespread scepticism, with media reports predicting a steep decline in capacity and residual value over time.

One of the most significant findings from P3's study is that EV batteries retain substantial value beyond their first lifecycle. Once removed from vehicles, many batteries still possess sufficient capacity for secondary uses, such as stationary energy storage.

The findings reveal that most EV batteries retain more than 80% of their capacity even after 200.000 kilometres, proving their resilience and long-term value. As electric vehicles (EVs) become increasingly mainstream, the question of battery longevity and its impact on vehicle residual value is often raised.

Assuming the battery voltage at 80% capacity retention remains the same as an as-assembled battery at a fully charged state, the energy remaining in the battery at the discharged state will be <∼20% (if there is no voltage drop).

Figure 1. Evolution of the energy of various types of batteries at the statuses of as-assembled, maximum charge, and recycling/disposal (fully discharged after reaching 80% capacity retention). energy input of a battery is the energy eficiency.

BESTs are increasingly deployed, so critical challenges with respect to safety, cost, lifetime, end-of-life management and temperature adaptability need to be addressed. The rise in renewable energy utilization is increasing demand for battery energy-storage technologies (BESTs).