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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 reportedly rejecting Renault proposal for closer ties

TOKYO — Nissan Motor Co Ltd will reject a management integration proposal from French partner Renault SA and will call for an equal capital relationship, the Nikkei newspaper said on Monday, citing sources. Nissan's management feels the Japanese company has not been treated as an equal of Renault under existing capital ties, and a merger would make this inequality permanent, the Nikkei reported. The outlook for the alliance — one of the world's top automaking partnerships — has been in focus since the arrest in November of its main architect, Carlos Ghosn, on charges of financial misconduct. The former Nissan and Renault chairman has denied the charges against him and has said he was the victim of a boardroom coup by Nissan executives opposed to closer ties. To which, Bloomberg reported that it has seen emails in which Nissan executives were working with Japanese government officials to defend the company's independence, as Ghosn was pushing for a full merger. The emails indicate growing concern at high levels of the Japanese government, in the months before Ghosn's arrest, that his merger efforts would boost Renault and its largest shareholder, the French government, and harm Nissan, in a relationship the Japanese already saw as lopsided. The emails indicated a desire to keep the existing structure of the alliance with a "re-balancing of the shareholding" to reduce Renault's 43 percent stake in Nissan, and stated that Nissan's independence "should be respected." Nissan declined to comment directly on the emails, while reiterating that misconduct by Ghosn and his former aide, Greg Kelly, is "the sole cause of the chain of events." Renault saved Nissan from the brink of bankruptcy two decades ago and under their current capital alliance, the French company holds greater control over its much larger partner. Nissan Chief Executive Hiroto Saikawa declined to say whether the company had received a merger proposal from Renault. "Now is not the time to think of such things," he told a group of reporters outside of his house in Tokyo. "At the moment we are focused on improving Nissan's earnings performance. Please give us time to do that." Renault declined to comment on the report. Renault has argued in its proposal that an integration would maximize synergies within the French-Japanese alliance, according to the Nikkei. The Financial Times reported last month of Renault's intention to restart merger talks with Nissan within 12 months.

Watch this mobility scooter drag race a Nissan Skyline with surprising results

Okay, so we may not be talking about a classic, all-conquering Nissan Skyline GT-R here. But the sub-Godzilla-trim Nissan Skyline GTS-T is still a car, after all. And, as a car, if someone asked you to lay a bet on it versus a mobility scooter (Hoveround, Rascal, you know the type) in a drag race, you'd probably take that action.
Unless, of course, that drag race were happening on YouTube, in which case you'd put your money away and open up your laptop. On the Internet it's best to never bet against the wild underdog.
We don't mean to spoil the following video for you, but come on. When you saw Skyline vs. Scooter in that headline, you had a pretty good idea of what was to come, didn't you. Needless to say, mobility scooters fitted with Suzuki GSX-600F engines are pretty quick. Strap in and scroll down.