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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.

Infiniti installs Taisuke Nakamura as new design chief

The cubicles and corner offices at Infiniti HQ in Japan continue to change hands. Infiniti Global Design Chief Karim Habib, only in that position for about two years since leaving BMW in 2017, has left the Japanese luxury brand "to pursue other opportunities." In his place, Nissan has elevated Taisuke Nakamura, a 26-year company veteran who is currently Nissan's program design director responsible for global design strategy, and concept car and production vehicle design. Nakamura has a stout design resume in service to both Nissan and Infiniti, having worked on the Qs Inspiration sedan concept (above) shown at the Shanghai Motor Show in April, the QX Inspiration crossover concept shown at the Detroit Auto Show this year (below), and the Prototype 10 speedster concept revealed at Pebble Beach last year (bottom). All of those were electric concepts, making Nakamura the point man for Infiniti's push into electric vehicles and hybrids, and the carmaker's introduction of a new design language. Last year, Infiniti said it would have a new EV on the market in 2021, as well as "e-Power" series hybrids with small battery packs charged by gas-powered generators.   Those EVs should fully embody the brand's new design DNA, seen initially in the recent concepts. The automaker said around the Qs reveal that the new "aesthetics are underpinned by Infiniti's desire to challenge convention and design cars which are engaging, enriching, enabling and enchanting – what the company calls its ‘4ENÂ’ approach to design." At the QX reveal in January, Habib said that as engineers made a "shift towards smarter, more compact and less intrusive powertrains, we were able to create an alternative form with flowing gestures, more engaging in character and more enriching in experience. With its long cabin, balanced proportions and muscular stance, the concept heralds in a new era for Infiniti models.” Infiniti said Nakamura takes up his post next week, Sept. 1, and will report to the same boss he has now, Alfonso Albaisa, Nissan's global design head. Aside from Habib, other top non-Japanese Nissan executives such as Daniele Schillaci, Jose Munoz and Trevor Mann have left the Japanese automaker in the recent past, since the arrest of Carlos Ghosn. The former chairman, who faces charges of fraud and misconduct, is awaiting trial in Japan over charges including enriching himself at a cost of $5 million to Nissan, Japan's No. 2 automaker.

Mystery shoppers love Infiniti, hate Tesla

Infiniti, followed by Lexus tied with Mercedes-Benz took the top two spots for best sales experience according to mystery shoppers from the latest Pied Piper Prospect Satisfaction Index, while EV manufacturer Tesla recorded the lowest overall score. Not surprisingly, premium brands dominated the top ranks. Including the three already mentioned, luxury brands occupied seven of the top ten spots and included Audi, BMW, Porsche, and the only American brand to crack the upper echelon, Cadillac. Toyota, Volkswagen, and Nissan rounded out the first ten positions. The news for domestic automakers isn't good. Aside from Caddy, the only other star-spangled automaker to score above the industry average is Chrysler. The rest of FCA, most of GM, and all of Ford fell below the line. But Pied Piper's mystery shoppers handed Tesla the biggest walloping – the company is ten full points below the next lowest brand, Volvo, and its score of 86 is 17 below the average of 103. It's baffling, considering the company's touted direct-sales model. "Tesla leaves me scratching my head," Fred O'Hagan, Pied Piper's president and CEO, told Wards Auto. "They own all of their stores, so you would think each one would be doing the same thing. But they're not. Tesla is consistent in its inconsistencies." O'Hagan added that there's a "huge variation" in Tesla's store-to-store effectiveness, and that in some cases, shoppers found showroom workers that acted more like "museum curators," Wards Auto reports. It might be popular to call Tesla the Apple of the car world, but based on Pied Piper's work, the brand has a long way to go to emulate the uniform shopping experience of an Apple Store. The news might be bad for Tesla, but even for the brands that scored below average, there's cause for celebration. Only Tesla and Mini lost points in this year's rankings, and only Mercedes and Lincoln held steady. Every other brand, including Infiniti, which topped the index for the first time, gained at least one point. The biggest improvements belong to Porsche, Land Rover, and Mitsubishi, which all jumped five points. Pied Piper's annual Prospect Satisfaction Index uses mystery shoppers – over 6,100 this year – from across the country to assess dealers and generate rankings from over 50 individual factors. News Source: Pied Piper via WardsAuto Green Audi BMW Cadillac Chrysler Infiniti Lexus Mercedes-Benz Nissan Tesla Toyota Car Buying Car Dealers study