Nissan: Altima S Sedan 4-door 2.5l 2005 on 2040-cars

Auto blog

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.

Renault, Nissan and Hyundai face shutdowns in India over workers' COVID fears

CHENNAI, India — Automakers Renault, its alliance partner Nissan and Hyundai face temporary factory closures in India due to growing unrest among workers concerned about rising COVID-19 infections. Workers at Renault-Nissan's car plant in the southern state of Tamil Nadu will go on strike on Wednesday because their COVID-related safety demands have not been met, a union representing the workers told the company in a letter on Monday. Hyundai said it would suspend operations at its plant, also in Tamil Nadu, for five days starting Tuesday, after several workers staged a brief, sit-in protest on Monday amid rising cases in the state. "The management agreed to close the plant after workers expressed concerns over safety after two employees succumbed to COVID," E. Muthukumar, president of the Hyundai Motor India Employees Union, told Reuters. The unrest highlights the challenges companies face in India amid a huge wave of COVID-19 infections, an overwhelmed health system and a shortage of vaccines which is making employees more fearful. Tamil Nadu is one of the worst hit states with more than 30,000 cases a day last week. The state, an auto hub known as India's Detroit, has imposed a lockdown until May 31 but allowed some factories, including auto plants, to continue operating. The strike threat at the Renault-Nissan plant came ahead of a court hearing on Monday over allegations from workers that social distancing norms were being flouted and factory health policies did not sufficiently address the risk to lives. Renault-Nissan has said it is following COVID-19 safety protocols. At the hearing, a lawyer for the workers argued that while the company had reduced the number of shifts, production numbers had not been cut and the headcount remained the same leading to crowding on the factory floor. The company told the court it had reduced the workforce to around 5,000 from 8,000. It also said it had vaccinated employees over 45 and was willing to inoculate those under 45 if vaccines were made available. The two-judge bench presiding over the case said that while the health of workers is paramount, if industries go down there will be no place for them to work. They also said the company must not take advantage of the exemption granted by the state and should reduce production to meet only necessary export orders. "The production should have fallen ... You also have to assuage the feeling of the workers," said the court, which will next hear the case on May 31.

Some NY cabs could avoid hybrid ban

The Nissan NV200 is having a rough go of it as New York City's Taxi of Tomorrow. The Greater New York Taxi Association wants the van banned on the grounds that it isn't a hybrid, and has gone so far as to sue the city to keep the NV200 out of taxi fleets. According to The New York Times, the city has responded by proposing to allow taxi drivers to use certain hybrid vehicles. The Taxi and Limousine Commission's proposal would allow any vehicle with an interior volume of 138 cubic feet or more. Unfortunately, that excludes nearly every machine that isn't the size of the NV200.
Technically, Nissan is working on a hybrid version of the Taxi of Tomorrow, but it may be years before that model hits the streets, and the Greater New York Taxi Association isn't satisfied with the city's offer. In a statement, the Association said, "These rules look like they have been created to short-circuit the litigation. We do not consider this to be a serious proposal."