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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.

Carlos Ghosn brings Nissan Leaf EV to happy nation of Bhutan

The Nissan Leaf has been declared the cleanest car in the US, and it's going to have a good case to claim the same title in Bhutan. Yes, Bhutan, the country famous for measuring Gross National Happiness is about to get serious about the EV Grin. Last December, we learned that Bhutan's capital city, Thimphu, wanted to build up a Leaf taxi fleet. That's when Renault-Nissan CEO Carlos Ghosn went to Bhutan to talk about the project and he has recently returned to deliver some vehicles to the Prime Minister of Bhutan, Tshering Tobgay, who has been advocating for EVs since taking office in July and has set a preliminary target of 2,000 EVs on the streets of Thimphu. Tobgay said his country, "will commit to a program to achieve zero emissions as a nation by a certain target date." It's not an outrageous goal for the Himalayan country, since it generates a lot of hydro-electric power, way more than it can use. There are only around 750,000 citizens of Bhutan and they only use five percent of the clean power made within its borders. Most of the rest goes to neighbor India. The problem, as expressed in Nissan's press release (available below), is that Bhutan takes "almost all of the revenue earned from selling electricity" to buy fossil fuel from India and power its national vehicle fleet. You can probably see how making the switch to EVs can simplify and clean things all around. There's a video of Ghosn's Bhutan trip below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Nissan Partners with Bhutan on National EV Strategy Feb. 21 – Thimphu, Bhutan – An electric revolution has begun in Bhutan. The remote Himalayan country, renowned for championing "Gross National Happiness," has taken first steps towards becoming a leading global electric-vehicle nation. Prime Ministers of Bhutan, Tshering Tobgay and Nissan CEO, Carlos Ghosn Prime Minister Tshering Tobgay and Nissan CEO Carlos Ghosn announced a partnership in Thimphu Friday, which will see both parties work toward achieving Bhutan's ambitious clean-energy goals. "We will develop a program, we will commit to a program to achieve zero emissions as a nation by a certain target date," said Tobgay who has backed the EV project since taking office in July last year.

Fiat contemplating sub-brand to compete with Dacia, Datsun

You can add Fiat to the admittedly short list of automakers considering a low-cost brand to rival Dacia. The inexpensive Eastern European brand from Renault-Nissan has performed on the balance sheet like a premium model line, and the money the alliance is taking off the table is encouraging other players to deal themselves in. Pretty soon Nissan's Datsun sub-brand will join the Dacia party, going on sale in Russia, Indonesia and India and will claim even more rubles, rupiahs and rupees for the parent company. Volkswagen recently said it will make a decision this year on a budget line for the Chinese market. With the euthanasia of Lancia and plans to move the Fiat brand upmarket, company CEO Sergio Marchionne wonders aloud to Automotive News Europe whether there could be room for a new budget brand underneath Fiat.
We're told that the initiative has been in the idea box for five years and even moved to the stage of name considerations, like Innocenti, but worries about profit kept it from realization. If such a range were to be developed, Marchionne says it couldn't be built in Italy and stay within budget, and the company is "analyzing its manufacturing capacity outside of Europe to see if a low-cost brand is viable."