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DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.

Nissan Z, the new Genesis G90 and some exciting future EVs | Autoblog Podcast #755

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Road Test Editor Zac Palmer. Greg has been spending time in the 2023 Nissan Z in Performance trim this week alongside a pair of Volvos — the 2023 S60 Recharge and 2023 V60 Cross Country. Meanwhile, Zac has been driving the stately and lovely Genesis G90. Next, they talk about the news, starting with the latest happenings in the Formula 1 world — Zac recently returned from the USGP down in Austin, Texas. The talk transitions to a preview of the Los Angeles Auto Show coming next week before leading into the reveal of the all-electric 2024 Volvo EX90. Lastly, the pair discuss the spy shots of the electric Porsche Boxster and dig into what it means to finally have an electric convertible on the way. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #755 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2023 Nissan Z Performance 2023 Genesis G90 2023 Volvo V60 Cross Country 2023 Volvo S60 T8 Recharge News Formula 1 in America — the latest LA Auto Show Preview 2024 Volvo EX90 revealed Electric Porsche Boxster spy shots — first look Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Renault COO Tavares dreams of running GM or Ford

What do you do if you're in a job with no upward mobility? Admittedly, most of us just stick it out while secretly hoping our boss is sacked for all those paperclips he's been swiping, netting us a nice, shiny promotion. Then again, most of us aren't the number two at Renault, like Carlos Tavares.
Tavares is the right-hand man to Renault CEO, Carlos Ghosn, and like a lot of us, he's ready for another challenge. As Ghosn is only 59 years old and doesn't have a boss to fire him for paperclip theft, though, it's pretty unlikely that he'll be going anywhere anytime soon. Tavares doesn't seem too concerned, based on an interview he gave to Automotive News. "We have a big leader and he is here to stay," Tavares told AN.
What's surprising is where Tavares wants to go, "Why not GM? I would be honored to lead a company like GM." The Renault exec also mentioned Ford, and as AN points out, both organizations make a lot of sense. Both are led by CEOs that are approaching or are already past retirement age, and should be looking for dedicated replacements in the not-so-distant future. That doesn't mean Tavares is a shoe-in, though.