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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 shows self-cleaning car coated in nano paint

Washing the car is an activity like mowing the lawn that some people love and others find to be an absolute chore. For the latter group, Nissan may have an answer. Nissan is testing a nano-paint coating that could make the car wash a very infrequent place to visit.
Shown on a European Note hatchback, the key is a special layer of super-hydrophobic and oleophobic material called Ultra-Ever Dry that is sprayed over the paint. It creates a protective layer between the body and environment, and it means that when dirt or water come into contact with the car, the gunk just sheets away.
Nissan admits that the coating is still early in testing. The key will be if the stuff can actually last for the long term, and the company will be analyzing it over the coming months to see how it will react in different conditions. At the moment, the automaker has no plans to offer Ultra-Ever Dry as a standard feature, but it may make it available as an aftermarket addition in the future. Scroll down to watch the video of Nissan testing the stuff in some very dirty conditions.

Ghosn took bullet train to Osaka en route to Lebanon

Japan Justice Minister Masako Mori speaks during a press conference about Carlos Ghosn's escape from Japan. / Getty TOKYO — Former Nissan and Renault boss Carlos Ghosn began his astonishing escape from Japan with a bullet train ride from Tokyo to Osaka, possibly accompanied by several people, Japanese news agency Kyodo reported Monday. Japanese authorities also said on Monday they may still press for Ghosn's extradition from Lebanon to face multiple charges of financial wrongdoing, even though the country does not normally extradite its nationals. Security cameras captured Ghosn leaving his home on Dec. 29 at about 2:30 p.m. (0530 GMT) and arriving some hours later at Tokyo's Shinagawa Station, where he took the train 300 miles to Shin Osaka Station, Kyodo said, citing a person familiar with the matter. The international fugitive then went by car to a hotel near Osaka's Kansai International Airport, where he boarded a private jet at 11:10 p.m., according to the media report. Ghosn was forbidden from leaving Japan while awaiting trial on charges of financial misconduct, which he has denied, but he fled at the end of 2019 to escape what he called a "rigged" justice system. Prosecutors are now working with police to piece together Ghosn's route and find out who helped him, Kyodo said. In the government's first briefing since Ghosn skipped bail, Justice Minister Masako Mori said on Monday that as a general principle, Tokyo could request the extradition of a suspect from a country with which it has no formal extradition agreement. Such a request would need to be carefully examined based on the possibility of "guaranteeing reciprocity and the domestic law of the partner country," Mori told reporters in Tokyo.   Arrest warrant Mori did not say what would guarantee reciprocity (the idea that benefits or penalties extended by one country to citizens of another should be reciprocated). She also did not say if there were any Lebanese nationals in Japan wanted in Lebanon. Mori offered little insight into the events of Ghosn's escape to his ancestral home, repeatedly saying she could not comment on specifics because of an ongoing investigation. Japanese officials broke days of silence about the Ghosn case on Sunday, saying they would tighten immigration measures and investigate his escape thoroughly. The authorities have also issued an international notice for his arrest.