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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.

Since 2010, Chevy Volt has outsold Nissan Leaf by just two units

The first two plug-in vehicles from major automakers in the US were the Chevy Volt and the Nissan Leaf. Ever since they went on sale to much fanfare in late 2010, we've been tracking the monthly sales with great interest (and, of course, other green vehicle sales as well). After a big initial lead by the Volt – the Volt outsold the Leaf 23,461 to 9,819 in 2012 – the Leaf has been chugging along and outsold the Volt every month since November 2013. We knew that the cumulative totals would soon tip in favor of the Leaf, but for at least one more month, the Volt is going to be able to say its the most popular plug-in vehicle in the US. Overall, for all officially reported sales of the Leaf and the Volt, things are almost exactly tied. Since the vehicles went on sale in the end of 2010 until the end of February 2015, the Volt has sold 74,592 units and the Leaf has sold ... drumroll please ... 74,590 units. For February, Leaf sales totaled 1,198 units, a 17-percent drop from the 1,425 Leafs sold last February. Brendan Jones, Nissan's director of Electric Vehicle Sales and Infrastructure, said in a statement that, "Tough winter weather in several key markets held EV sales back in February. As we head into spring, we look forward to seeing more dealership traffic so shoppers can experience firsthand the benefits of the all-electric Nissan Leaf." Of course, it was cold in the US last February, too, but we're sure that the nasty weather did indeed play a role last month. Things were even worse for the Chevy Volt, which dropped to just 693 copies sold, down 47 percent from the 1,210 sold last year. That's just barely enough for Chevy to keep talking about its plug-in sales leadership, but we expect the message to change once the March numbers come out next month. Related Video:

Nissan and BMW want the UK to stay in the EU

Nissan and BMW are saying that the Brexit shouldn't become reality. It's a mixture of hope and threat because their planned investments in the UK risk to be damaged by the referendum's result. While those brands are still saying that every decision from the UK's people will be respected, you can sense a fear that every plan is going to be messed up. The problem is simple according to Nissan CEO Carlos Ghosn: "For us, a position of stability is more positive than a collection of unknowns. It makes the most sense for jobs, trade and costs." For sure Nissan is not going to shut its plant in northeast England if the country exits the Union, but this could change plans for the future, as the so-called Brexit could cause an increase on costs and above all on competition. Nissan employs 8,000 people in the UK across its manufacturing, engineering, and design facilities, and a further 32,000 indirectly through dealerships and its supply chain. All these people produce almost half a million cars and 80 percent of those are exported, so just imagine how taxes could affect prices and sales. If the EU's borders get smaller, Nissan will face some problems with customs duties the foreign products struggle with, as other Japanese automakers have so far, while importing their cars into the Union. Nissan is not the only maker interested in the outcome of the referendum to be held June 23; BMW is of the same mood, hoping Brexit won't become reality. The Germans already warn Mini and Rolls-Royce employees that the exit of UK from the Union could cause problems with increasing costs and higher prices due to tariff barriers. BMW CEO Harald Krueger at the Geneva auto show said "a UK vote to exit the European Union would cloud the future of the automaker's UK brands, which include Mini, along with Rolls-Royce". What's happening in this case is not only an English issue. In fact, although every decision taken by the UK's people must be respected, the automakers are right when saying they hope it is not going to happen, as you hope no one changes the cards during the game. Image Credit: Nissan Government/Legal BMW Nissan brexit open road