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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.

Renault and Nissan are among the businesses affected by massive ransomeware attack

SINGAPORE/TORONTO, May 14 (Reuters) - Technical staff scrambled on Sunday to patch computers and restore infected ones, amid fears that the ransomware worm that stopped car factories, hospitals, shops and schools could wreak fresh havoc on Monday when employees log back on. Cybersecurity experts said the spread of the virus dubbed WannaCry - "ransomware" which locked up more than 200,000 computers - had slowed, but the respite might only be brief. New versions of the worm are expected, they said, and the extent of the damage from Friday's attack remains unclear. Infected computers appear to largely be out-of-date devices that organizations deemed not worth the price of upgrading or, in some cases, machines involved in manufacturing or hospital functions that proved too difficult to patch without possibly disrupting crucial operations, security experts said. Marin Ivezic, cybersecurity partner at PwC, said that some clients had been "working around the clock since the story broke" to restore systems and install software updates, or patches, or restore systems from backups. Microsoft released patches last month and on Friday to fix a vulnerability that allowed the worm to spread across networks, a rare and powerful feature that caused infections to surge on Friday. Code for exploiting that bug, which is known as "Eternal Blue," was released on the internet in March by a hacking group known as the Shadow Brokers. The group claimed it was stolen from a repository of National Security Agency hacking tools. The agency has not responded to requests for comment. Hong Kong-based Ivezic said that the ransomware was forcing some more "mature" clients affected by the worm to abandon their usual cautious testing of patches "to do unscheduled downtime and urgent patching, which is causing some inconvenience." He declined to identify which clients had been affected. The head of the European Union police agency said on Sunday the cyber assault hit 200,000 victims in at least 150 countries and that number will grow when people return to work on Monday. "The global reach is unprecedented ... and those victims, many of those will be businesses, including large corporations," Europol Director Rob Wainwright told Britain's ITV. "At the moment, we are in the face of an escalating threat. The numbers are going up, I am worried about how the numbers will continue to grow when people go to work and turn (on) their machines on Monday morning." MONDAY MORNING RUSH?

Nissan's London Black Cab postponed because it can't meet emissions targets

Emissions concerns in London are causing headaches for Nissan, as the company continues its efforts to bring its Black Cab to the city's streets. A proposed ultra-low emissions zone could lead to standards in the city center that are so strict the gas-powered taxi can't meet them, AutoExpress reports. It's unclear just how low the new emissions standards may be, although AE references London's mayor, Boris Johnson, and his drive to make every London taxi emissions-free by 2018 as a particular thorn for the Japanese automaker. It's worth noting that the NV200 taxi is both cleaner and more fuel efficient than London's current fleet of iconic black cabs. That alone makes it seem like reason enough to get the new cabs on the streets. But it's the strictness of the proposed standards and the apparently set-in-stone nature of the NV200's current engineering that is holding up the cab's future. While Nissan offers an emissions-free e-NV200, it would reportedly need to completely reengineer the NV200-based cab to meet the future standards if they're approved. Whether that will happen, though, remains an open question.