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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.

Chinese-designed Nissan Lannia Concept debuts in Beijing

Nissan showed off a stylish new concept car to the assembled crowds of media at the Beijing Motor Show. The Lannia Concept is... well, it's not that easy to describe. It's kind of a sedan, only it looks a bit like a fastback from the rear. But for a twist, it has an ever-so-small rear deck. Regardless of how we'd classify it, it's a seriously sharp piece of styling, thanks to its unique shape and flowing character lines.
If the Lannia's styling appears familiar, it's because we've sort of seen it before. There's more than a little bit of inspiration from the Friend-Me Concept. The Lannia's overall shape is similar to the Friend-Me, while both the front and rear clips look decidedly more production ready. Considering this evolution, we shouldn't rule out a production Lannia in the next few years. And if Nissan's product boss, Andy Palmer is any indication, the new model might not be limited to China.
"It was designed by Chinese, built by Chinese for the Chinese people, and ultimately, for the world," Palmer said in a statement. If Nissan can keep this sharp styling, this could prove a compelling buy in a number of markets.

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.