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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.

Panoz and DeltaWing suing Nissan over BladeGlider concept

Similarity is bound to occur in an industry where most of the products follow the same basic formula. But once in a while a new design comes along that doesn't quite reinvent the wheel, but comes pretty damn close. The DeltaWing project was one such design - and Nissan, the car's designers allege, stole that design.
After the DeltaWing proposal was rejected by the IndyCar series, its creators took it to Le Mans and brought Nissan on board to supply the power. Nissan subsequently pulled out of the program and came out with the ZEOD RC hybrid racer (right), bearing a suspiciously similar design with an unusually narrow front track at the end of a long nose cone, and a wider track at the back. The Japanese automaker then displayed the BladeGlider concept (below, right) at the Tokyo Motor Show, envisioning a translation of the same formula into road-going form.
The similarity did not escape Don Panoz, who - after making sports and racing cars under his own name and founding the now-defunct American Le Mans Series - was a central figure in bringing the original DeltaWing to life. Now Panoz has filed a lawsuit against Nissan, soliciting the courts to issue a cease-and-desist order on both the ZEOD RC and BladeGlider projects, naming Nissan motorsport chief Darren Cox and Ben Bowlby (who defected to Nissan from the DeltaWing program) as part of the suit.

Nissan Leaf electric vehicle goes on sale in Mexico

Nissan chief Carlos Ghosn may not be intimately familiar with the Dean Martin 1962 classic South of the Border, but he may as well start crooning the standard now. The Japanese automaker said this week that the Nissan Leaf will officially be the first mass-produced battery-electric vehicle to be sold in Mexico. So break out the horn section. Nissan will start selling the Leaf through its Mexico City dealership network and is touting features such as the car's fast-charging port. That feature allows the car to be 80-percent charged in about a half hour. Nissan and the Mexican government are also working on an "electric corridor" of charging stations between Mexico City and Cuernavaca, which is about 55 miles to the south. There will also be "charging zones" in various districts throughout Mexico City, making it easier for the newly inaugurated EV drivers to charge up in town. Nissan has been working on Leaf brand exposure to Mexico City for years, sending the first batch of 100 all-electric Leaf taxis to Mexico starting in the fall of 2011. Last month, Nissan had its best ever month of sales in the US, moving 3,117 Leafs in May and the company has sold over 115,000 Leafs around the world. Check out Nissan's press release below. Nissan becomes the first company to sell a 100% electric vehicle in Mexico Nissan LEAF arrives in Mexico and becomes the first 100 percent electric vehicle to be comprehensively marketed in the country. The car of the future is already part of the present with more than 115,000 global sales. Nissan, the leader company in electric vehicles, strengthens its commitment to promote Zero-Emission mobility by opening charge centers distributed in Mexico. MEXICO CITY – Nissan today announced the launch of LEAF, the first 100 percent electric vehicle to be marketed in Mexico. The presale starts today and will continue until its arrival on June 30. Nissan LEAF is the first zero-emissions vehicle marketed in Mexico, confirming the leadership and the promise of the Japanese company to transform traditional driving into a new silent experience. "Nissan LEAF is a reality in the Mexican market," said Airton Cousseau, CEO of Nissan Mexicana. "We are proud to be the pioneer company to introduce the first zero-emissions vehicle leader in sales worldwide in Mexico.