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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.

Nissan GT-R drag races Swiss fighter jet

Proving that speed is fun in any language, Nissan's German arm recently pitted a GT-R up against an ex-Swiss Air Force fighter jet, called the Hawker Hunter. Now the idea of a car-versus-plane drag race is nothing new, but this is the first time we can recall a GT-R being involved.
While this Nissan video is almost a month old, we're pretty sure you won't be disappointed by the action, which shows the two high-speed machines racing along the two-kilometer runway. We don't want to ruin the suspense, so scroll down for the latest matchup of sports car versus fighter jet.

Nissan GT-R goes 183 mph on ice in Russia

When a pair of Russian pilots wanted to set a local ice-speed record, they chose a stock Nissan GT-R for the task. Roman Rusinov, a Russian race car driver, and Andrey Leontjev, a Russian auto journalist, took Godzilla to Lake Baikal and ran it up to 294.8 kilometers per hour (182.8 miles per hour) across frozen stuff estimated to be 1.4 meters thick.
While the worldwide record of 205.48 mph was set by Juha Kankkunen in a Bentley Supersports Convertible, the mark achieved by Rusinov and Leontjev establishes a new Russian record. Well done, boys. You can watch it all go down in the video below.