One of the biggest fears that deters potential buyers from switching to electric vehicles is the longevity of the battery and the high cost of replacing it. For years, there has been a myth that batteries become almost unusable after a few years of use, turning the car into an expensive paperweight. However, the latest data from the real world shows not only that this fear is unwarranted, but also that modern batteries exceed all the original expectations of manufacturers.
It’s not that scary
A new study by battery analytics firm Recurrent found that the average electric vehicle retains as much as 95 percent of its original capacity and range after five years on the road. Data collected from more than 30,000 electric vehicles shows that degradation is much slower than previously thought, with cars retaining 97 percent of their original range after three years.
Early electric vehicle manufacturers were concerned that battery packs would degrade to the point where replacement would be inevitable and frequent. Fortunately, the reality is completely different. Advances in battery chemistry, sophisticated thermal management systems and smart vehicle software have dramatically improved longevity. The battery replacement rate has plummeted – while about one in 12 vehicles needed a new battery for vehicles built between 2011 and 2016, that number dropped to 0.3 percent for models built from 2022 onwards.
Charging myths and the real impact on your battery
One of the frequent concerns of owners concerns the impact of fast charging on battery health. While it’s true that frequent use of fast DC chargers can slightly speed up degradation compared to regular, slower AC charging at home, the difference is less than you might think. Geotab data shows that batteries that are frequently charged on fast chargers still retain about 89.7 percent of their original capacity after several years, while those that are charged more slowly retain only slightly more, about 94.9 percent. Modern battery management systems (BMS) effectively protect cells from excessive stress during rapid charging.
For optimal battery health, experts recommend maintaining a charge level between 20 and 80 percent capacity. Charging to 100 percent and discharging to zero places more stress on the battery’s chemistry and can accelerate its aging in the long run. Of course, degradation is also affected by other factors such as extreme temperatures, which is why battery heating and cooling systems are crucial, as well as an aggressive driving style with sudden accelerations.
The problem of trust and the growing used car market
Despite all the positive data, consumer confidence is still at a low level. A 2025 survey by AutoPacific found that fear of expensive battery replacements remains the leading reason why many U.S. buyers continue to avoid electric vehicles. The costs of replacing the entire package, although rarely necessary, can range from 5,000 to over 20,000 euros, depending on the model. However, the practice of replacing only individual faulty modules within a package is becoming more common, which significantly reduces the cost of repairs.
As the market for electric vehicles matures, so does the offer of used models. It is precisely here that transparency about the state of the battery becomes a key factor. The buyer of a used vehicle with an internal combustion engine knows what to look for, but with an electric car, the most important component is the “black box”. This is why it is extremely important that used electric vehicles are advertised with a clear and transparent battery health certificate (SoH – State of Health). A survey by Startline finance back in 2025 found that as many as nine out of ten used car dealers believe the sector needs a standardized battery health testing scheme. As many as 78 percent of them believe that the condition of the battery is a key factor for most buyers.