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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.

How did Nissan tweet a response to the Royal Baby announcement so quickly?

A mere seven minutes after the Duke and Duchess of Cambridge announced they were pregnant with their second child, Nissan had the perfect post circulating on the Twittersphere. How did Nissan know to expect Kate and William were expecting? By paying attention to the Internet zeitgeist.
It could be triplets and there would *still* be enough room for the Queen... #XTrail #SevenSeats #RoyalBaby pic.twitter.com/k4HiNAb7lq

- NissanUK (@NissanUK) September 8, 2014

Driving an EV cross-country, planting trees in all 48 states

National Drive Electric Week kicks off on September 12, but Brian Kent is starting his celebration early in an incredibly green way. On August 24, he sets off in his Nissan Leaf from Albion, NY, on an odyssey to visit the 48 contiguous US states and plant a tree in each one. Along the way, he's stopping off for the EV festival's party in Jeffersontown, KY. Kent calls the 26,000-mile drive the Negative Carbon US Road Trip because in 40 years those 48 trees should trap about 10 times more CO2 than his Leaf produces on the journey. He's sponsored by Kampgrounds of America, and this modern Johnny Appleseed is sowing the plants at some of its 485 sites around North America. National Drive Electric Week currently has 146 events scheduled for this year, including several in Canada and one in Hong Kong. The annual celebration aims to get people interested in plug-in vehicles. One of the gatherings last year even had the world's largest ever parade of EVs, but the record was unofficially broken in Berlin this spring. Will we get a new record next month? Just in Time for National Drive Electric Week: A Cross-Country Trip to Raise Awareness of Plug-In Vehicles Brian Kent will log 26,000 miles in his electric car, planting one tree in 48 states along the way San Francisco, Calif., Aug. 18, 2015—Brian Kent, set to embark upon a cross-country trek in his electric car on Aug. 24, will participate in National Drive Electric Week by routing his 48-state, gasoline-free tour through the EV celebration's event in Jeffersontown, KY. Kent plans to launch his 26,000-mile journey from his home in Albion, NY, charging his Nissan LEAF in city centers and campgrounds alike and planting a tree in each state for his first annual Negative Carbon U.S. Road Trip. He will blog along the way. Volunteers and other plug-in vehicle supporters in more than 130 cities from Hilo, HI to South Portland, ME will stage ride-and-drives and related activities during National Drive Electric Week, Sept. 12-20, for the same reason that Kent is hitting the road: to raise awareness of plug-ins. "My goals are consistent with those of National Drive Electric Week," said the freelance writer. "Misperceptions are rife.