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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.

New allegations against Ghosn concern payments to Saudi businessman

BEIJING – Fresh misconduct allegations brought by Tokyo prosecutors against ousted Nissan Chairman Carlos Ghosn center on the use of company funds to pay a Saudi businessman who is believed to have helped him out of financial difficulties, two company sources with knowledge of the matter said. Prosecutors arrested Ghosn for a third time on Friday, accusing him of aggravated breach of trust in transferring personal investment losses to the automaker. The prosecutors' statement said they believe that around October 2008, Ghosn was trying to deal with losses on paper of 1.85 billion yen ($16.6 million) incurred on a swap contract he had with a bank which it did not name. A person helped arrange a letter of credit for Ghosn and a company run by the person later received $14.7 million in Nissan funds in four installments between 2009 and 2012, the statement said, adding that the payments were made in Ghosn's and the person's interests. "By doing so, (Ghosn) behaved in a way that breached trust, and inflicted damage on the property of Nissan," the statement said. The statement also said Ghosn had earlier sought to have Nissan shoulder the appraisal losses directly. According to the Nissan sources who have knowledge of the company's probe into its former chief, the person who helped Ghosn is Khaled Al-Juffali, vice chairman of one of Saudi Arabia's largest conglomerates, E. A. Juffali and Brothers, and a member of the board at the Saudi Arabian Monetary Authority. He is also majority owner of a company called Al-Dahana which owns half of a regional joint venture called Nissan Gulf with the other half held by a wholly owned unit of Nissan Motor. Sheikh Khaled Juffali has no comment on this subject, according to an emailed statement from E. A. Juffali and Brothers. Ghosn's Tokyo-based lawyer, Motonari Otsuru, was unavailable for comment on this article, according to a person who answered the phone at his law office. A representative for the Ghosn family declined to comment. Other media have said Ghosn has through a lawyer denied that he shifted losses to Nissan and has told investigators that the four payments were for legitimate business purposes, including a reward for handling problems at Nissan dealers in Saudi Arabia. Tokyo prosecutors declined to comment. Asked about Ghosn's reported comments, a Nissan spokesman said: "We cannot comment on matters related to Ghosn's arrest for breach of trust.

Nissan's Taxi of Tomorrow shut down by NYC courts [UPDATE]

Justice Schlomo Hagler may have just put a big dent in Nissan's plans to rule New York City's taxi fleets and outgoing Mayor Mike Bloomberg's vision of a unified fleet of yellow cabs.
As an October 28 deadline approached that would see all current, non-hybrid taxis replaced over by the Nissan NV200 over a three-to-five-year span, the legal battle that's enveloped the Taxi of Tomorrow program from the start has intensified. In a lawsuit, the Greater New York Taxi Association claims New York's Taxi and Limousine Commission overstepped its powers in mandating that taxi fleets are refitted with the NV200, according to the New York Daily News. This isn't the first time the courts have sided with the cabbies in the ToT debate.
Justice Hagler agreed with the cabbies, striking down the Taxi of Tomorrow purchasing requirements, and saying, "Simply stated, the power to contract and compel medallion owners to purchase the Nissan NV200 from Nissan for ten years does not exist in the City Charter," according to The Wall Street Journal.