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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 reports $4.13B net income for 2012

The news for Nissan is good when it comes to the company's results for the 2012 financial year that ended on March 31. Even though the numbers were down in many of the world's major markets, increased sales in the US, Brazil and the Middle East, ten new models and a strong fourth quarter allowed Nissan to hit its target for the year and notch record sales of 4.914 million units globally. On net revenue of $116 billion, Nissan posted net income of $4.13 billion and an operating profit of $6.31 billion.
There are upward-looking projections for this year, Nissan forecasting a 7.8-percent jump in sales to 5.3 million units, with $117.89 billion in net revenue and $4.42 billion in net income. That net revenue number probably won't actually match what's reported next year, though, because Nissan is changing its accounting method and won't include revenue and operating profit results from its joint venture with China's Dongfeng. Net income doesn't change under the new method, but the adjusted net revenue forecast is $109.16 billion.
There's a press release and two videos below with more details for those of you who go gaga for annual reports.

Nissan teases new pickup on Twitter [w/video]

Nissan is celebrating 80 years of building pickup trucks by teasing its latest one on Twitter ahead of a June 11 reveal. Official information about the new vehicle is essentially nonexistent at the moment, but there are some clues to extrapolate from.
There's a special member of the #Nissan family on the way. Due date: June 11th. pic.twitter.com/OkQ0GkXypV

- Nissan (@Nissan) June 2, 2014