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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.

In his own words: Carlos Ghosn on why EVs rule

That's a nice little dig at hydrogen fuel cell technology, Mr. Ghosn. The Nissan chief, long a champion and heavy-duty investor of electric-vehicle technology, wrote an essay on his LinkedIn Influencer page on why EVs are the theoretical wave of the future. It's obviously not an unbiased opinion, but he makes his points clearly. Ghosn points out that "refueling" costs per mile for EVs are about 70 percent less than gasoline and more than 60 percent less than hybrids. He cites the rapidly growing network of plug-in vehicle charging stations that are eliminating "range anxiety" with at least some folks, and notes that the fastest growing US plug-in vehicle market is, of all places, Atlanta. Additionally, Ghosn, near the bottom of the post, says that a plug-in vehicle charging station can be deployed for as little as $2,000, while building a hydrogen station costs about $2.5 million. Pretty clever. Nissan's sales numbers appear to give Ghosn's confidence some clout. Through November, sales of the Leaf in the US surged 35 percent from a year earlier to more than 27,000 units. Globally, Nissan says the Leaf's sales are up 20 percent this year. Check out Ghosn's own words below. Zero-Emission Cars: Both Consumers and the Environment Win Last month, the Renault-Nissan Alliance sold its 200,000th zero-emission car. The Nissan LEAF, which we launched four years ago, is by far the top-selling electric vehicle worldwide. Sales are up 20 percent this year. Together with the Renault ZOE and other zero-emission vehicles in our lineup, Renault-Nissan's EVs have been driven about 4 billion kilometers – enough to circle the earth 100,000 times. They are the world's first and most successful mainstream, mass-marketed EVs. Why are more people switching to EVs? The reasons are clear: EVs are convenient: They can be refueled at home or at the office from multiple energy sources, including the increasing amount of clean energy from solar or wind power. Imagine never stopping at a gasoline service station because you wake up to a "full tank" every day. This is one of the top things EV owners enjoy about their cars. EVs are economical: Even with gasoline prices falling, Consumer Reports recently estimated operating costs of a Nissan LEAF in the United States at 3.5 cents a mile, compared with 11.9 cents for a subcompact gasoline car or 8.6 cents for a hybrid. EV owners typically save on their insurance policies, because insurers view EV drivers as a lower risk.

2014 Nissan 370Z pricing announced, MSRP reduced by $3,000

Nissan is up to something. The company announced pricing for the 2014 Nissan 370Z, 370Z Nismo, and 370Z Roadster, which isn't out of the ordinary. What is, is that the standard, hardtop 370Z has received a $3,130 reduction in price for 2014. The upmarket Touring model, meanwhile, has been dropped $2,550.
That means, excluding the $790 for destination and handling, a base, six-speed manual 370Z is only $29,990. That is an excellent deal. Adding an automatic will bump the price to $31,290, while the Touring model starts at $35,270 for DIY shifters and $36,570 for autos. The top-of-the-range Nismo runs $43,020. The Roadster, meanwhile, starts at $41,470.
So what does this mean in the grand scheme? Automakers don't just slash $3,000 off the price of a desirable sportscar because they're feeling generous.Could this be a move to clear out stock before a replacement to the current Z arrives?