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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.

Recharge Wrap-up: Eigg's renewable energy grid, Wulin City Car EV looks like i3

Scotland's Isle of Eigg's electrical grid relies solely on wind, hydro and solar power. It's the first grid of its kind after switching to renewable energy from noisy, unreliable diesel generators. Scotland's renewable resources are fodder for supporters of independence form the UK, and Eigg is a perfect example of that potential. Besides being a responsible community, it also seems like a lovely place to visit. Read more at Reuters. London Mayor Boris Johnson is calling for incentives for diesel vehicle scrapping. The goal is to improve London's air quality, encourage the purchase of clean vehicles and offset the inconvenience of charging diesel cars to enter the city's proposed Ultra Low Emissions Zone. Read more at Green Car Congress or in the press release below. BMW, Nissan, Renault and Volkswagen are teaming up to create a better EV charging infrastructure in the UK and Ireland. As part of the Trans-European Transport Network (T-ENT) program, the group aims to create extended EV-friendly roadways with the UK Rapid Charge Network, connecting major cities on the islands. Plans for the network include 70 rapid chargers along 684 miles of road. The four manufacturers also want to extend the project to mainland Europe to encourage the adoption of EVs. Read more at Hybrid Cars. Wuling is working on an EV, called City Car, which liberally takes visual cues from the BMW i3. The City Car EV concept is slated to make its debut in November at the Guangzhou Auto Show, while a production version could make its way onto Chinese roads next year. We might have to wait until the debut to know what powers the City Car, as those details haven't been released yet. General Motors is a 43-percent stakeholder in Wuling. Read and see more at Car News China. Taxi customers in New York will enjoy greater payment flexibility with the new interoperability between RideLinQ and Way2ride apps. Now customers will be able to use either app to pay in any of the city's 20,000 green and yellow taxis. There's no need for separate apps for separate cabs, and no need for drivers to install any new equipment. The groups behind the apps hope to expand this functionality to other cities across the country. Read more in the press release below.

Nissan ex-chief Carlos Ghosn cancels hastily arranged Tokyo press conference

TOKYO — Former Nissan boss Carlos Ghosn on Friday abruptly canceled plans for what would have been his first press conference since his arrest in November, after journalists had been notified about a briefing just two hours earlier. Ghosn's lawyers called to cancel the event that was to be held at the Foreign Correspondents' Club of Japan (FCCJ), but did not immediately give a reason for the abrupt change, an official at the FCCJ told Reuters.Automotive News cited a source as saying his family and media team staged a "last-minute intervention" to get him to call off plans to make his case at the press conference, fearing he would be faced with questions he couldn't answer without tipping his legal team's strategy, or that Japanese prosecutors would take a dim view of him publicly criticizing their actions and attempt to revoke his bail. A spokesman for the Ghosn family in Tokyo did not answer his mobile phone and did not immediately respond to an emailed request for comment. If the conference had not been canceled, Ghosn would have spoken as Japanese Prime Minister Shinzo Abe hosts national leaders at the G20 leaders gathering in Osaka, including U.S. President Donald Trump and French President Emmanuel Macron, who Ghosn's wife Carole have called on to raise the issue of her husband's treatment by Japan's courts. In May a Japanese court dismissed an appeal by Ghosn to ease a bail restriction that bans him from contacting his wife and rejected a subsequent request to allow him a one-off monitored meeting with Carole. His lawyers have argued that that condition violates Japan's constitution and international law on family separations. Ghosn's movements are also monitored and he is only allowed internet access from a computer at his lawyer's office that records the activity for the court. Once among the world's most feted auto executives, Ghosn is awaiting trial in Japan over charges including enriching himself at a cost of $5 million to Nissan, in a scandal which has rocked the industry and exposed tensions in the automaking partnership between Nissan and Renault SA. Since his initial arrest in November last year, Ghosn has been charged four times for crimes which also include underreporting his Nissan salary and temporarily transferring personal financial losses to his employer's books during his time at the helm of Japan's No. 2 automaker.