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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 Qashqai getting Juke-R treatment

As long as there are sacred cows, there will be heretics sharpening their knives in anticipation of the butchering. When Nissan first carved into the mighty GT-R to create the Juke-R, onlookers quickly fell into two camps: those who thought the plan was sheer genius and those who believed cannibalizing a GT-R to feed a Juke was a new brand of obscenity. We fell firmly in the former camp. Now Severn Valley Motorsport is looking to take that theme one step further by shoving the go-faster bits from a GT-R into a Nissan Qashqai. That noise you hear? It's us cackling like mad men.
While we can't say for certain, we're guessing the project should yield the world's fastest Qashqai thanks in no small part to the twin-turbocharged VR38DETT V6 engine from the GT-R. Throw in the all-wheel-drive system and the little CUV should change demeanor dramatically. We can't wait to see this thing in action.

Nissan returning to top-level US racing with this TUDOR entry

Muscle Milk Pickett Racing, formerly powered by Honda to two consecutive American Le Mans Series championships, is now officially powered by Nissan. The Japanese automaker's return to the top tier of US sports car racing comes with Nismo factory backing of the Muscle Milk entry in the newly created TUDOR United SportsCar Championship. Those with long memories will recall that Nissan walked away from America's then top-flight sports car series, IMSA, more than 20 years ago, having won 33 races, three manufacturer titles and four driver's titles from 1988 to 1991.
The ORECA 3 racecar's reveal also marks the introduction of Nismo Global Exchange drivers to the team. Alex Brundle, who drove for Nissan-powered OAK Racing last year in the FIA World Endurance Championship, will join Lucas Luhr and Klaus Graf at the Rolex 24 Hours of Daytona. It's his first time in a major US event, but having finished second in the WEC and in the LMP2 class at Le Mans last year, he's no novice. Nismo drivers will also contest the 12 Hours of Sebring and Petit Le Mans.
The No. 6 Muscle Milk entry will be hitting the track with the other competitors this weekend during the "Roar before the Rolex 24," with the race itself happening on January 25-26. You can read more about what's coming in the press release below.