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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.

Renault plans $2.2 billion 'no taboos' cost cutting after first loss in a decade

PARIS — Renault's first loss in a decade triggered a no-taboos commitment on Friday to cut costs by 2 billion euros ($2.2 billion) over the next three years as the automaker tries to put the Carlos Ghosn affair behind it. As ex-Volkswagen brand manager Luca de Meo prepares to take over as chief executive of the French automaker, which has been rocked by the Ghosn scandal, it did not exclude job cuts in a promised review of its performance across all factories. Like many auto industry rivals, including its alliance partner Nissan, Renault is grappling with tumbling demand in key markets like China, and said it expects the sector to be hit further this year, including in Europe. Nissan this week had its first quarterly loss in nearly 10 years and cut its operating profit forecast. In a reflection of this sobering assessment of the market outlook, Renault set a lower operating margin target of between 3% and 4% for 2020, down from 4.8% in 2019, and cut its proposed dividend against 2019 by almost 70% from a year earlier. While Renault faces high investment costs to produce cleaner car models and supply chain problems due to China's coronavirus outbreak, a major challenge remains moving on from the scandal involving former boss-turned fugitive Ghosn, which strained its relations with Nissan and paralyzed joint projects. "It has been a tough year for Groupe Renault and the alliance," acting Chief Executive Clotilde Delbos said on a conference call, adding that the broader autos downturn had hit the company "right when we were facing internal difficulties." Renault could not afford to wait for De Meo's arrival in July to attack costs, Delbos said, adding that nothing would be "taboo" as it reviews its business. Meatier goals would be made public in May, she said, alongside joint plans with Nissan, as executives repeated assurances that the alliance was on track. Delbos also stressed that Renault's automotive operational free cash flow, under scrutiny from analysts, would be positive in 2020 after stripping out restructuring costs. "We're very confident that there is no topic on cash availability within the group," Delbos said. Renault shares recovered from falls in early trading, and were up 1.8% at 1200 GMT despite it posting a loss of 141 million euros ($153 million) for the group share of net income.

Autoblog Podcast #380

Episode #380 of the Autoblog podcast is here, and this week, Dan Roth, Chris Paukert and Seyth Miersma talk about the Fiat-Chrysler five-year plan, the seeming demise of the Nissan Cube, and proposed legislation to require speed limiters with a 68-mph maximum on America's tractor trailers. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #380: Topics: Fiat-Chrysler five-year plan Nissan Cube on the way out? Big rig speed limiters coming? In the Autoblog Garage: 2015 Mercedes-Benz S63 AMG 2014 Chevrolet Sonic RS Sedan 2014 Honda Odyssey Touring Elite Hosts: Dan Roth, Chris Paukert, Seyth Miersma Runtime: 01:44:17 Rundown: Intro and Garage - 00:00 Fiat Chrysler Plan - 29:40 Nissan Cube - 01:07:33 Semi Speed Limiters - 01:17:33 Q&A - 01:27:35 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Auto News Earnings/Financials Plants/Manufacturing Podcasts Rumormill Chevrolet Chrysler Dodge Fiat Jeep Nissan nissan cube speed limiters