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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 adds 2013 Titan to gearshift recall

Nissan has added the 2013 Titan to the list of vehicles recalled over potential gearshift issues. Just a few days ago, the automaker recalled nearly 20,000 NV Vans for a problem with the shift lever assembly that could cause the gear selector to read inaccurately. Now Nissan is recalling certain 2013 Titan pickup trucks manufactured between December 17, 2012 and February 20, 2013 and equipped with column-mounted shift levers, though for a different fault. The pickups were built using certain chemicals that could cause the brake-shift interlock mechanism to fail over time. If that happens, the truck could be shifted out of Park without the driver's foot on the brake.
As a result, the truck could roll away and cause an accident or injury. Nissan says it will remedy the fault free of charge. Owners can expect to be notified once the campaign begins on or around April 8. You can read the full National Highway Traffic Safety Administration notice below for more information.

Mercedes, Nissan and VW slammed by China's CCTV

Several automakers in China, including joint ventures with Nissan, Volkswagen and Mercedes-Benz, are in hot water because their dealers are allegedly overcharging customers for repairs. China Central Television, the country's state broadcaster, leveled the claims during its annual Consumer Day expose. CCTV runs these reports each year on March 15 and often takes aim at foreign companies operating within China. This year the focus fell on automakers, according to the Financial Times, and no domestic car companies were targeted. The network also accused dealers of overselling parts, and it took aim at Jaguar Land Rover specifically for problems surrounding transmission repairs, according to Reuters. The yearly stories are often criticized for focusing on outside businesses. "It panders to a certain type of nationalism as it tends to target foreign companies and rarely touches large state groups or monopolies," Qiao Mu, a journalism professor at Beijing Foreign Studies University, said to the Financial Times. Foreign automakers seem to face tighter scrutiny when doing business in China than their domestic counterparts, in general. The government there investigated several luxury brands, including Audi and BMW, last year for how they supplied spare parts and whether the components were overpriced. Some incurred fines, and Lexus decided to lower its prices. Volkswagen also experienced protests when owners felt the company wasn't handling a recall properly. The CCTV report also comes as many auto dealers in China are feeling a pinch due to high mandated sales targets from automakers. The situation was so dire in early 2015 several brands cut back sales targets and in some cases even paid the sellers to offset poor profits. News Source: Financial Times - sub. req., ReutersImage Credit: Andy Wong / AP Photo Government/Legal Mercedes-Benz Nissan Volkswagen Car Dealers Auto Repair Maintenance jaguar land rover