There are voices of concern about used EVs due to concerns about battery life.Some models deteriorate rapidly, and life expectancy in 8 years?
AUTOCAR JAPAN
In some cases, the “life expectancy” is reached within 8 years
The deterioration of EV batteries also affects the selling price of used cars.
One of the most talked about EVs is battery life. A study by UK specialists found that some vehicles will die in as little as eight years, while others will die much sooner.
British battery performance analysis specialist Silver Power Systems (SPS) tracks and monitors battery data and health, but performance varies widely, especially among fleets of vehicles used as commercial vehicles. One thing has been confirmed.
“Even within a single fleet, battery health can vary by up to 10%,” said SPS founder and chief technology officer Pete Bishop. 10% degradation is half that, given that it is considered the lifetime of a
However, what is defined as "life" depends on how the vehicle is used. Liam Mifsud, the company's program manager, explains:
“People who operate purpose-built vehicles probably don’t consider 80% lifespan and will use it longer. Maybe, but we know that at 70%, battery degradation becomes noticeable.”
Influence on used car prices How to deal with sales cars
The speed of deterioration of the battery is affected by the usage environment. The data in the article is the actual results in the UK.
SPS's findings are also consistent with those of telematics provider Geotab. The company also measures EV battery health and publishes the results in its online comparison tool EV Battery Degradation.
The data is based on 6,300 EVs from 24 makes and models. According to Geotab, the average battery deterioration rate is 13.5% six and a half years after production. Among those documented are three model years of the BMW i3, the oldest from 2017 showing a deterioration rate of 16% in just under three years.
On the other hand, the 2014 Nissan Leaf shows 23% deterioration in almost six years. The 2015 Tesla Model S had deteriorated by 10% in four and a half years.
Autocar's UK editorial department compared Geotab data with privately sold used cars in the UK. Then, in a 2012 Nissan Leaf with a mileage of 164,000 km, there were only 8 out of 12 fuel gauge bars in the meter, and the battery had deteriorated by about 30%. As a result, according to the owner, the actual mileage of this vehicle is only 80km.
After 53,000km, the 2015 BMW i3 showed 19% deterioration. The owner claims that a full charge and eco-pro mode will give a range of around 135km in the summer. The 2014 model year Tesla Model S with a mileage of 112,000 km had a full charge range reduced from 450 km when new to 435 km.
In contrast to these private sales, used-car dealers in the UK are less aggressive about battery capacity and range, according to Autocar. But one EV dealer recently started showing battery health in their ads. Drive Green, based near Bristol, uses a battery monitor to create a battery certificate that is displayed alongside the vehicle.
For a 2014 Renault Zoe with 87,000km, the figure is 96%. A sales rep said it was the only store in the UK that offered this service.
However, some traders are skeptical about the reliability of this measurement method. One EV dealer told Autocar that it needs to know what the battery was like before it can be analyzed by a third-party system.
“A warmed battery produces good numbers, so dealers first run the vehicle and then check it. Not only do dealers sell to general consumers, but dealers do the same thing when buying and selling between dealers. I've seen that this way we can sell for a better price the best thing to do is go with the range display on the vehicle we've sold hundreds of EVs However, based on this standard, we see 1-2% battery degradation every year.”
Is the lifespan of an EV the same as an engine car?
Some experts say EV battery life isn't a big deal.
One group that is expected to have a clear picture of battery degradation is Recovas. It aims to build a supply chain for used batteries, with participation from car recycling company EMR, automakers such as BMW, the University of Warwick, and the UK Battery Industrialization Centre. As part of that, EMR is collecting used EV batteries, but the company's president, Roger Morton, said it's still in the early stages as far as supplies go.
“Batteries in EVs have lasted much longer than anyone expected. Batteries degrade over time, but range is less of an issue for those who own three or more cars. It's probably a second or third car for short trips, but it's much cheaper than a new car anyway, so it's already factored in."
“I think EVs will last as long as engine-powered vehicles, but they may last longer because of their simple structure. It will be around the year 2045.”
