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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.

Ghosn says having Apple in EV business would be good news

Nissan once promised to have commercially viable autonomous vehicles on the road by 2020 and even certified a Leaf to test the technology in Japan. The company has since backpedaled a bit from its original lofty claims, though. During CEO Carlos Ghosn's keynote presentation at the Mobile World Congress in Barcelona, Spain, the auto exec talked more about the automaker's strategy and directly confronted Apple's rumored entry into the market. "When Apple says they are going to come with an electric car in 2020, that's good news for us," he said in his speech, according to Adweek. Ghosn took the view that any company able to grow the acceptance of EVs would help every automaker in the segment. The Renault-Nissan Alliance has been at the forefront of developing the market and claimed nearly 60 percent of the global market share last year. He was also the latest auto industry heavyweight to voice his opinion on Apple entering the industry. However, in contrast to former General Motors boss Dan Akerson, the Nissan CEO was much more welcoming. Ghosn also used the speech as a chance to clarify Nissan's plans for autonomous vehicles and seemingly pushed the original goal back by about five years. "In 10 years, you'll have cars without the driver. It is here, and it's going to transform the products," he said, according to Adweek. Under Nissan's current timeline, traffic-jam assist and fully automated parking are due in 2016, followed by automatic lane changing in 2018 and the ability to drive through intersections without a driver's control comes in 2020. News Source: AdweekImage Credit: Yasuyoshi Chiba / AFP / Getty Images Green Nissan Renault Technology Emerging Technologies Autonomous Vehicles Electric

Behold your 2015 Nissan Versa Sedan, America

If you've been hoping that the 2015 Nissan Versa Sedan would adopt something of the Versa Note hatchback's styling aesthetic, consider your hopes dashed. This is the facelifted four-door Versa, which is set to make its official debut next week at the New York Auto Show.
You can make your own minds up on the exterior rework, which is a fairly gentle evolution of the current model. The headlights and a new, familial grille are the two big changes for the front of the Versa that give it a bit of Altima style. Out back, the headlights are slightly tweaked, while a sportier rear bumper is the most noticeable change. The top-end Versa SL also adds new mirrors, complete with Audi-ish integrated turn signals, while the Versa SV adds new 15-inch alloys.
Tweaks for the Versa's huge interior are kept to a minimum, and constitute a new steering wheel and a tweak to the center stack, along with some improved materials. Like the Versa Note, Nissan has fitted the NissanConnect infotainment system, although it's only available on the Versa SL.