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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.

2014 Nissan GT-R Track Edition loses rear seats, gains performance

Nissan is adding yet another tier to the GT-R hierarchy for 2014 with the GT-R Track Edition. Debuting at the 2013 Chicago Auto Show, the bruiser ditches its back seat in the quest for a lower curb weight, and a set of more seriously bolstered front buckets keep occupants planted once the going gets twisty. The Nürburgring-developed Track Edition offers an integrated carbon fiber front splitter with brake cooling ducts as well as an even harder-core suspension. Engineers swapped the stock bits for special Bilstein DampTronic shocks and paired them with more aggressive springs.
The engine still delivers 545 horsepower and 463 pound-feet of torque and still relies on the split-second quickness of the standard GT-R's six-speed dual-clutch transmission. Expect to see just 150 examples of the 2014 Nissan GT-R Track Edition land on American shores starting this May. In the interim, check out the full press release below for more information.

Carlos Ghosn's lawyer requests bail again after Nissan ex-chairman indicted — again

TOKYO — Japanese prosecutors indicted Carlos Ghosn on Monday on another charge of aggravated breach of trust, a Tokyo court said, the fourth charge against the former Nissan Motor Co Ltd chairman, which his lawyers met immediately with a bail request. The charge came on the day Ghosn's latest detention period was set to expire. Ghosn had been out on bail when authorities arrested him for a fourth time on April 4 on suspicion he enriched himself at a cost of $5 million to the automaker. "We are confident that we have the evidence to successfully prosecute all four cases," an official from the prosecutor's office said at a briefing after the indictment was announced. Ghosn has denied all four of the charges, which include understating his income, and said he is the victim of a boardroom coup. He has accused former colleagues of "backstabbing," describing them as selfish rivals bent on derailing a closer alliance between Nissan and its top shareholder, France's Renault SA. "Carlos Ghosn is innocent of the latest charges brought against him by the Tokyo prosecutors, aided and abetted by certain Nissan conspirators," a Ghosn representative said in a statement. The case has exposed tensions in the Nissan-Renault alliance forged by Ghosn some two decades ago when the French automaker invested in Nissan, then on the brink of bankruptcy — a deal that gave Renault control over its larger partner. Nissan is due to reject a management integration proposal from Renault and will instead call for an equal capital relationship, the Nikkei newspaper said on Monday, citing sources. Ghosn's arrest has also focused a harsh light on Japan's judicial system, which critics refer to as "hostage justice" as defendants who deny their charges are often not granted bail. Under Japanese law, prosecutors are able to hold suspects for up to 22 days without charge and interrogate them without their lawyers present. In accordance with these terms, prosecutors had to indict or release Ghosn by Monday. According to the latest indictment, Ghosn caused a total of $5 million in losses to Nissan from July 2017 through July 2018. During that period, prosecutors allege two separate payments of $5 million were made from the account of a Nissan subsidiary into the account of an overseas dealership. A total of $5 million was subsequently transferred from the dealership's account to another account in which Ghosn had an interest.