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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 confirms what's in the box

While there were few doubts about what could've been hiding under the giant cardboard box being transported on a flatbed truck earlier this month, Nissan has officially confirmed that it was, in fact, a Versa Note being delivered from Amazon.
As a part of the special promotion, online shoppers who bought a Versa Note using the retailing giant also received a $1,000 Amazon gift card. Scroll down to watch how the car was packaged and shipped as well as what the buyer did with all that cardboard.

Nissan Resonance Concept gives glimpse of next Murano

The Nissan Resonance Concept has bowed at the 2013 Detroit Auto Show, giving the world a glimpse at the company's future design direction for crossovers. Specifically, the concept heralds what the next-generation Murano may look like once it touches down. Nissan has already confirmed the successor to the big crossover's throne will be produced in Mississippi for the first time. With a "floating" roof and dynamic head lamp arrays, the Resonance boasts a far more athletic appearance than the snub-nosed current generation. Inside, designers worked up a cockpit aimed at conveying what "the future of first-class space travel might be."
Nissan isn't saying what the upcoming Murano will have under the hood, but the Resonance boasts an all-wheel-drive hybrid powertrain with a small-displacement internal combustion engine and an electric motor. A lithium-ion battery delivers power while a CVT takes care of putting power to the wheels. Take a look at the full press release below for more information.