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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.

2014 Nissan GT-R Track Pack squares off against Audi R8 V10 Plus

The team over at Motor Trend has pitted the new Audi R8 V10 Plus against the Nissan GT-R. While both of the bright red all-wheel-drive supercars are comparably matched in power output, the similarities end there. Audi offers a mid-engine aluminum coupe with a naturally aspirated V10 that spits out 550 horsepower. Nissan shows up with a more traditional coupe equipped with a 545-horsepower twin-turbocharged V6 at the front of the car.
The Head-to-Head video takes both cars to the Streets of Willow Springs in the California desert for some track work with professional racing driver Randy Pobst behind the wheel. After a day at the track, the pair head to the local mountains for some spirited real-world driving. One dominates on the circuit, while the other earns back its credibility in the canyons. We won't tell you which coupe comes out on top, but we think you may be surprised. Follow the link below to watch for yourself.

Nissan e-NV200 electric taxi comes to Amsterdam

Amsterdam's Taxi Electric liked its two-plus years with an all-Nissan Leaf electric vehicle fleet so much that it just got bigger, or at least with its vehicle choice. The company, which says it's the first private-taxi outfit to boast an all-electric fleet, is going to start adding Nissan e-NV200 electric compact vans to its stable of vehicles. The company started out with its Leaf fleet in late 2011 and has since put about a million miles on the 25 EVs. Nissan said in January that the new electric van will start being tested by FedEx here in the state and it has already been put through the wringer by FedEx in Singapore, Japan and Germany. Last September, Nissan said it was in the "final development phase" of the electric compact van and would start selling it to the public this year, though it wasn't real specific with details. That month, it was also announced that the vehicle, which uses the same drivetrain as the Leaf, would go into taxi service in Barcelona sometime this year. Nissan representatives didn't immediately respond to a request for more details on when the model would start public sales, how much it would cost and what it's single charge range is. Until we hear back, you can check out the official press release below. This summer Taxi Electric becomes the first taxi company in Amsterdam to adopt the zero-emission Nissan e-NV200 Taxi Electric first 100% Nissan LEAF fleet since November 2011 Pioneering Amsterdam-based company have covered 1.5 million km demonstrating Nissan EVs' quality and reliability AMSTERDAM, Netherlands – Taxi Electric will be the first private taxi company to add the new 100-percent electric Nissan e-NV200 taxi to its green-energy zero-emission fleet. The combination of Nissan's innovative zero-emission technology, in the form of the 100-percent electric Nissan LEAF, and Taxi Electric's ground-breaking city transportation model have been a recipe for success since the start of operation in 2011. Now the two companies have teamed up again to build on this success and take the next step forward by introducing the game-changing all-electric Nissan e-NV200 taxi this summer. Amsterdam-based Taxi Electric operates a fleet of 25 Nissan LEAF vehicles. It was the first private taxi service to switch to a fleet of 100% electric taxis in 2011. The Dutch company's fleet of Nissan LEAFs has now amassed a trouble-free 1.5 million km in taxi operations – proof of the electric vehicle's high quality and reliability.