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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.

Watch this mobility scooter drag race a Nissan Skyline with surprising results

Okay, so we may not be talking about a classic, all-conquering Nissan Skyline GT-R here. But the sub-Godzilla-trim Nissan Skyline GTS-T is still a car, after all. And, as a car, if someone asked you to lay a bet on it versus a mobility scooter (Hoveround, Rascal, you know the type) in a drag race, you'd probably take that action.
Unless, of course, that drag race were happening on YouTube, in which case you'd put your money away and open up your laptop. On the Internet it's best to never bet against the wild underdog.
We don't mean to spoil the following video for you, but come on. When you saw Skyline vs. Scooter in that headline, you had a pretty good idea of what was to come, didn't you. Needless to say, mobility scooters fitted with Suzuki GSX-600F engines are pretty quick. Strap in and scroll down.

Nissan's big price cuts threatening others' profits

Bloomberg reports Nissan may be keeping the competition up at night even more than normal. The Japanese automaker recently cut prices on seven of its models and bolstered incentive offerings in an attempt to gain market share in the US, and the strategy is working. Last month saw the company's sales leap by 25 percent, which is nearly triple the industry average. Nissan is currently taking advantage of the weak yen - Japanese currency has fallen by 15 percent against the dollar, which has given the automaker around $1,500 per car to use to either add features or cut prices. Some analysts are calling the policy "scorched earth."
Meanwhile, American automakers like Ford, General Motors and Chrysler are doing their best to keep from sliding back into old bad habits. The Detroit Three have steadily moved away from a discount and incentive strategy to bring in new buyers since the 2009 recession. Those short-sighted tactics helped paved the way for bankruptcy at both GM and Chrysler. As Bloomberg reports, the resolve to stay away from big discounts may falter if Toyota begins using similar tactics.