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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.

MotorWeek proves '90s were awesome with Supra, Stealth, RX-7, Corvette, 968, 300ZX comparo

Oh, the heady days of 1993, back when the Clinton Presidency was just getting underway, and it seemed like every hot new rock band was coming out of Seattle. Sports cars in the US had finally shaken off the shackles that slowed them during the '70s and '80s, and you could buy any number of legitimately quick vehicles again. MotorWeek recently went digging into its archives to find this six-model test from 1993 showing off some of the best semi-affordable performance coupes that money could buy at the time, and it's priceless.
Featuring the 1994 model year Toyota Supra in twin-turbo guise and MY 1993 versions of the Porsche 968, Nissan 300ZX TT, Mazda RX-7, Dodge Stealth R/T Turbo and Chevrolet Corvette LT-1, MotorWeek definitely covered all of the bases. One thing that might surprise younger readers is these cars' performance. The video only provides 0-60 acceleration times, but several of these vehicles would still be considered pretty potent today - over 20 years since going on sale. The Supra is especially impressive, hitting 60 miles per hour in just 5 seconds. Even today, that's nothing to sneeze at.
Given their performance potential and still-attractive looks, it's amazing that some of these coupes are old enough to drink now. The progress of interior design and safety equipment in the intervening years is pretty shocking, though. In most of these models, having two airbags is touted as a big deal. Scroll down to watch a Throwback Thursday blast from the past about some of the '90s best sports cars.

Recharge Wrap-up: Fisker takes apart Finland assembly, Nissan Leaf sales in Europe expected to grow 25%

The Fisker Karma's Uusikaupunki, Finland production lines are being dismantled. The lines, operated by Valmet Automotive in the same plant that assembles the Mercedes-Benz A-Class, have been idle since Fisker's money woes brought them to a halt in 2012. Fisker, which has since been purchased by Wanxiang, and Valmet are still in talks over future collaboration. Read more at YLE. Nissan expects a double-digit percentage growth in Leaf sales in Europe in 2015. Nissan Europe's Jean-Pierre Diernaz puts that number at around 25 percent over 2014's record sales. Part of this is due to much lower prices than earlier model years, thanks to government incentives and lower production costs than earlier model years. Diernaz also said that the e-NV200 van will make up about 20 percent of Nissan's EV sales in Europe. Read more at Automotive News Europe. EV drivers pay less on average in taxes than gasoline vehicle drivers in every state except Virginia. Some states impose extra taxes and registration fees for EVs to make up for lost revenue from fuel taxes, but EV drivers still come out ahead, even when compared to high-mileage cars like the Toyota Prius. Even in Wisconsin - which might follow Colorado, Nebraska, North Carolina, Virginia and Washington in added EV fees - those who drive electric should fare better. Virginia, however, charges EV drivers an extra $114 annually across two added fees, while gas drivers would only get dinged about $35.10 in gas taxes in a 50-mpg car. Read more at Green Car Reports. Two hydrogen-powered electric bus prototypes will be deployed on a trial basis Hamburg, Germany. The Solaris articulated electric buses use fuel cell range extenders from Ballard. The buses were unveiled on December 18, and will go into operation in January 2015. The German government is funding the trial, and Hamburg aims to cease the purchase of diesel buses by 2020. The new-generation fuel cell system in the two Hamburg buses improve upon Ballard's previous design by using fewer parts and exhibiting less parasitic power loss from the integrated air compressor and coolant pump. Read more at Ballard's website. Featured Gallery 2012 Fisker Karma: Second Drive View 30 Photos Related Gallery 2013 Nissan Leaf View 55 Photos News Source: YLE, Automotive News Europe, Green Car Reports, BallardImage Credit: Copyright 2014 Drew Phillips / AOL Green Fisker Nissan Alternative Fuels Transportation Alternatives Electric Hydrogen Cars recharge wrapup