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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.

Will Nissan's Cummins deal upset Ram's marketing mojo? [w/poll]

Ram has used Cummins engines in its heavy duty trucks since 1989, and it is the only pickup truck brand to use products from the Indiana-based engine maker. With the announcement that the next Nissan Titan will also use a Cummins powerplant, and a Nissan spokesman having already said "We will definitely leverage the Cummins brand name," a piece in Automotive News wonders whether the deal will affect the way Ram markets its tie-up with Cummins.
The question really is, how intense is this competition? While it is the first time that trucks from two different brands have used Cummins engines, they'll be two different engines in two different kinds of trucks; Nissan is going to put a 5.0-liter turbodiesel in a non-heavy-duty Titan, Ram only uses its 6.7-liter, inline six-cylinder turbodiesel in heavy-duty offerings. The diesel that Ram will offer in its light-duty, half-ton 1500 is a 3.0-liter V6 EcoDiesel with 240 horsepower and 420 pound-feet of torque - compared to about 300 hp and 550 lb-ft expected from the Titan's Cummins - and its marketing so far has focused on the fuel economy gains.
If Nissan was going to prove its commitment to the segment, it had to do something compelling. If we're talking about sales competition between Ram and Nissan, Ram has sold 201,633 trucks as of July this year, up 24.2 percent, 31,314 of those sales coming last month; Nissan has sold 10,020 Titans through the end of July, down 21.1 percent, and just 1,168 in July itself. Nissan's new truck boss - who hopped there from Ram - said that buyers have asked for a powerful turbodiesel in something other than a heavy duty pickup, and from what we've read on various comment boards, the pickup truck crowd is excited about Nissan's move.

Nissan union wants French to stop meddling with Renault alliance

Nissan is getting some unexpected reinforcements in its ongoing battle with the French government over its involvement in Renault. Its Japanese union, which has traditionally been a very hands-off entity, issued harsh criticism for the French government's attempts to assert control over its alliance partner. According to Bloomberg, this is the first time in 16 years that Nissan's union has weighed on the company's affairs, and it's stating its position on the matter in no uncertain terms. The union called France's attempt at scoring double voting rights within Renault "unacceptable and against the intended spirit of the Alliance." "We support the numerous attempts of Nissan to engage with the French government to find a balanced and constructive solution that will benefit and strengthen the Alliance," the union said in a statement obtained by Reuters. It's unclear what impact the union speaking out will have on the current power struggle between Renault-Nissan CEO Carlos Ghosn (shown above) and the French government, but we doubt it'll contribute to any quicker of a conclusion. Related Video: News Source: Reuters, BloombergImage Credit: Itsuo Inouye / AP Government/Legal Nissan Renault France renault-nissan alliance