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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 touts e-NV200 as electric VIP transport

While the big auto show may be in Paris next month, right now in Hannover, Germany, commercial vehicle manufacturers are peddling their wares to fleet operators. Among them is Nissan, which is not only upgrading its NV400 full-size van with new engines and technology, but also showcasing a rather unusual show car in the form of the e-NV200 VIP Concept. Nissan has outfitted this electric NV200 demonstrator to chauffeur passengers around town in comfort and under electric propulsion. It's decked out in a two-tone metallic blue paint job and an interior upholstered in white leather contrasting with black trim and carpets, although for some reason the Japanese automaker hasn't seen fit to release any interior images. In the back you'll find a 21.5-inch DSP monitor, LED lighting and a pair of "club class" seats (again, no pictures), moved aft-wards to maximize leg room to 26 inches with an extendable footrest, while still allowing for luggage space behind. The driver can even make use of Nissan's new Smart Rear-View mirror to help get passengers as close to the red carpet as possible. NISSAN SHOWCASES EV FOR VIPs Zero emission e-NV200 is transformed for ultimate comfort city transport -introducing the e-NV200 concept for VIPs. - Luxuriously appointed 100% electric for downtown VIP passenger shuttle - Two-tone metallic blue exterior and white leather seats - Limousine-like space and 21.5-inch monitor with digital device connectivity - Smart Rear-View mirror providing clear rearward visibility in all conditions Hannover, Germany (23rd September, 2014) Fresh from launching the game-changing 100% electric Nissan e-NV200 compact van, the world's leading electric vehicle manufacturer has created a new zero emission concept for VIP transportation - the Nissan e-NV200 VIP Concept. Designers have upgraded the all-electric e-NV200 Evalia people carrier into a zero emission van perfect as shuttle transport for VIPs. The benefit of being zero emission means that the van can access all current and future clean air zones, as well as drive inside buildings, for the ultimate in discreet convenience. Behind the spectacular two-tone exterior lies a sophisticated and luxurious interior. The seats are covered in premium quality white leather with blue accents, which contrast with the predominantly black lower portion of the cabin - the trim and carpets are black with a piano black finish on the control surfaces.

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: