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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.

Ken Block's Gymkhana 8 to feature Dubai Police cars?

Yesterday we showed you the shiny Ford Fiesta that Ken Block will slide, spin, and hoon through the next Gymkhana video. In case the image above isn't clear, that video will drop at midnight EST on February 30th on the Ford Performance YouTube channel. We don't know all the entire premise of the video yet, but this Tweet from the man himself reveals that the video will be set in Dubai. Block is standing on the Fiesta we saw yesterday, and arrayed behind him are a handful of those famous Dubai Police cars you're probably familiar with. The force has a fleet of sportscars and supercars, and the purpose is outreach and goodwill among its citizenry, not necessarily the pursuit of criminals. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. From left to right, we can see a Maserati GranTurismo, Porsche 911, what looks to be a Nissan GT-R obscured by Block's Fiesta, a McLaren (likely a 650S), Ford Mustang, and a Ferrari 599 of some ilk. Will they take part? Maybe Block will try and run from what might be the most horsepower-intensive police fleet in the world. We'll have answers (and a few minutes of pure Block hooniganism) in a few days. Related Video:

Nissan Canada offers box-fresh racecar for $19,998 [w/video]

Nissan is seriously emphasizing its commitment to motorsports with projects like next year's GT-R LM endurance racer at Le Mans and the company's participation with GT Academy. At least in Canada, the automaker is adding another opportunity to get people onto the track with the new Nissan Micra Cup one-make race series. Sure, the Micra might not as quick as a GT-R, but this series offers Canadians a chance to start racing for a reasonable price. Nissan claims the events have "the lowest running cost of any Canadian series," and we can't think of a cheaper turnkey new racecar in all of North America.
The cars are all based on the not-for-US Micra 1.6 S M/T model with a 1.6-litre four-cylinder engine making 109 horsepower and 107 pound-feet of torque and a five-speed manual gearbox. The only real performance upgrades are a Nismo suspension kit, new exhaust, improved brake pads and sticky Pirelli tires. For added safety, the interior is entirely stripped out and is replaced with a full roll cage with a driver protection net, FIA-approved racing seat with five-point harness, fire extinguisher and front and rear tow hooks. The whole, race-ready package will set competitors back $19,998 Canadian dollars before taxes.
The inaugural Micra Cup series begins in May 2015, and the first season is exclusively taking place in Quebec, with the promise of moving to other provinces if it's a success. Each event includes a half hour of practice, a half hour of qualifying and a pair of half-hour races. Nissan is estimating impressive fields of over 25 cars of competitors.