Electric vehicle (EV) batteries in used cars remain remarkably strong, retaining 90 percent or more of their original capacity. This discovery provides reassurance for buyers considering second-hand electric vehicles, potentially easing concerns about battery degradation and vehicle longevity.
A comprehensive study conducted by Swedish car brokerage Kvdbil analyzed 1,366 used vehicles, including 723 pure electric vehicles (BEVs) and 643 plug-in hybrid electric vehicles (PHEVs). The results revealed that 80 percent of these vehicles maintained battery health above 90 percent, indicating minimal loss in battery performance over time.
Kia EV6 Leads in Battery Health
Among all tested models, the Kia EV6 stood out with the least battery degradation. It, along with the Kia Niro EV, ranked highest in battery health among pure electric vehicles. For plug-in hybrids, the Kia Sportage and Optima showed superior battery condition. These findings highlight Kia’s advanced battery management and durable battery systems.
Martin Reinholdsson, Kvdbil’s Testing Manager, emphasized that battery health depends more on usage habits rather than the vehicle brand or model. "It’s more about wear and tear influenced by factors such as vehicle age, climate conditions, driving behavior, and charging routines," he explained. Proper charging and driving practices play a crucial role in maintaining battery longevity.
Supporting Evidence from Additional Research
A parallel study by UK-based company Arval supports these conclusions, demonstrating that EV battery degradation is slower than previously anticipated. They examined 8,300 battery health certificates and found the average battery capacity at 93 percent. Even after reaching 200,000 kilometers, average battery capacity remained close to 90 percent, underscoring the robustness of EV batteries in real-world conditions.
Experts recommend certain best practices for EV owners to preserve battery health. These include avoiding frequent use of ultra-fast charging stations, not letting the battery charge drop below 10 percent, and limiting regular charging to around 80 percent capacity. Adhering to these guidelines reduces stress on the battery and helps maintain its performance over time.
Practical Battery Health Tips for EV Users
- Limit charging to 80% during daily use.
- Avoid deep discharges below 10%.
- Minimize frequent use of super-fast chargers.
- Adapt driving styles to reduce aggressive acceleration and braking.
- Park in shaded or climate-controlled areas when possible.
These recommendations support long-term battery sustainability and optimize driving range.
The findings about used EV batteries’ durability offer valuable insights for prospective buyers and current owners. Vehicles like the Kia EV6 not only excel in performance but also demonstrate exceptional battery resilience. This reinforces the growing viability and appeal of electric vehicles as sustainable transportation options with reliable longevity.
