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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.

Takata air bag recall list

The National Highway Traffic Safety Administration confirmed yesterday that 33.8 million vehicles with Takata airbags are going to be recalled. It's the largest recall in automotive history. The already record-breaking rate of automotive recalls this year shows no signs of slowing down, especially since millions of cars with defective airbags made by global supplier Takata are under ongoing scrutiny. The federal government is warning owners that inflator mechanisms in the air bags can rupture, causing metal fragments to fly out when the bags are deployed. The faulty air bags have already been blamed for multiple deaths. How do you know if your vehicle is safe? The National Highway Traffic Safety Administration released an updated list of vehicles under recall. Sometimes however, the government's website will crash and the list may not be complete. Check your VIN at the NHTSA website to make sure. The list of cars affected by the recall has not been released, but seem to span multiple models over the years for many of the automakers.

Carlos Ghosn's jail time extended, as family says he was framed

TOKYO — Former Nissan chairman Carlos Ghosn will be detained at least through Jan. 11, the Tokyo District Court said Monday, as the once-revered auto industry figure faces allegations that have marked a stunning downfall. Ghosn, who led Nissan Motor Co. for two decades and helped save the Japanese automaker from near bankruptcy, was arrested Nov. 19 on suspicion of falsifying financial reports. He also faces a breach of trust allegation, for which his detention had been approved previously through Jan. 1. The Tokyo District Court said in a statement that it had approved prosecutors' request for a 10-day extension. Ghosn has been charged in the first set of allegations, about under-reporting Ghosn's pay by about 5 billion yen ($44 million) in 2011-2015. Related: Top 10 automotive stories of 2018 Those close to Ghosn and his family say he is asserting his innocence as the alleged underreported amount of money was never really decided or paid, and Nissan never suffered any monetary losses from the alleged breach of trust. It is unclear when Ghosn may be released on bail. Tokyo prosecutors consider Ghosn, a Brazilian-born Frenchman of Lebanese ancestry, a flight risk. In Japan, formal charges can mean a suspect will get detained for months, sometimes until the trial starts, because of fears of tampered evidence. Some experts are puzzled that the allegations against Kelly and Ghosn are about underreporting income from Nissan. Nissan is in charge of filing such financial reports, not individual executives. Over the weekend, The New York Times published an article, "The Rise and Fall of Carlos Ghosn," describing his arrest as well as his almost legendary ascendance as the outsider who saved Nissan: "He was a person who was above the clouds," said one Nissan employee. But it's clear from the article that his autocratic style has long rankled the Japanese. In a sidebar, the NYT also covered accusations from Ghosn's daughters that Nissan had set him up for a fall, part of a mutiny against his explorations of a merger between Nissan and Renault. They point out that Hiroto Saikawa, the chief executive of Nissan, complained about the nature of the alliance in the first news conference following Ghosn's arrest. "Wow," daughter Caroline Ghosn said. "He didn't even waste a breath. He didn't even try to cover up the fact that the merger had something to do with this." The NYT articles included Ghosn family photos showing a softer side to the stern auto executive.