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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.

Workers at Mississippi auto supplier protesting low wages

Workers at an automotive seat factory in Mississippi are protesting what they say are low wages and poor working conditions as they attempt to unionize in what could become a new front for the United Auto Workers in the state. A group of workers and supporters at the Faurecia SA seating plant in Cleveland plans a Tuesday march. "We work an auto job and we're getting paid like Wal-Mart wages," said Jamarqus Reed, a 32-year-old Pace resident who has worked at the plant for almost 10 years. "We're trying to better ourselves." Nationally, the UAW has staked its future on unionizing Southern auto factories, with limited success so far. The union has been trying to organize Nissan Motor Co.'s Canton, MS, plant for years, and lost a 2008 worker vote at a Johnson Controls plant in nearby Madison that French-based Faurecia bought in 2011. The UAW narrowly lost a unionization vote at the Volkswagen AG plant in Chattanooga, TN, last year, but the union has since qualified for a new labor policy at the plant that grants access to meeting space and to regular discussions with management. The policy stops short of collective bargaining rights. The union is also trying to organize Nissan's assembly plant in Smyrna, TN, and Daimler AG's Mercedes-Benz plant in Tuscaloosa, AL. Protesters say Faurecia employees make a top wage of $11.64 per hour, while contract workers make $7.73 an hour. Company spokesman Tony Sapienza said that with overtime, the typical Faurecia employee makes more than the $27,000 a year that is the median wage around Cleveland. Wages are often low in the heavily impoverished Delta. "We are very confident that we are offering a very competitive wage," Sapienza said. Organizers criticize use of lower-paid contract workers Shannon Greenidge, a 44-year-old Cleveland resident, said she worked for a labor agency for more than two years before being hired directly by Faurecia. Greenidge said she makes $9.29 an hour, and can't save for retirement or to send her 11-year-old daughter to college. "That's not going to help me down the line in life," she said. Union supporters say as many as half the workers at the plant work for a contract-labor agency. Sapienza said that while the number varies, the company expects 15 percent of its workforce will be temporary employees this year. The UAW has organized some Southern auto parts plants in recent years, including Faurecia plants in Cottondale, Alabama, in 2012 and Louisville, Kentucky in 2013.

Mercedes considering Mexico for CLA production

Would you buy a Mercedes-Benz if it were made in Mexico? That's what the German outfit is wondering, as it considers localizing production of the its new budget model at a factory operated by Nissan, of which the automaker is a joint-venture partner.
According to a report from Automotive News, moving production of American-spec CLAs from Hungary to Mexico would protect Mercedes from currency fluctuations. "Mexico is the best location for the United States," Daimler Chairman Dieter Zetsche told AN. The CLA is also expected to become the brand's volume model in the US market, which makes North American production a logical move.
In the event that Mercedes approves the plan, Nissan would expand the capabilities at its Aguascalientes, Mexico plant, allowing production to begin in 2018.