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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.

Porsche Taycan is here, Lamborghini Sian is near | Autoblog Podcast #594

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor Alex Kierstein and Senior Editor, Green, John Beltz Snyder. They start the conversation with the cars they've been driving, including the Subaru Forester, Lincoln Navigator, Mercedes-AMG C 43 and Subaru Crosstrek Hybrid. Then they talk about the biggest news of the week: the reveal of the all-electric Porsche Taycan. After that, they sweep up other news, like the Lamborghini Sian, new Nissan Juke and the Aston Martin Vanquish 25 by Ian Callum. Next, Autoblog's Erik Meier, who both produces this very podcast and also hosts our Twitch livestream, joins the chat with his impressions of the latest racing game, "WRC 8." Finally, our editors try to provide some helpful guidance in the "Spend My Money" segment. Autoblog Podcast #594 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2019 Subaru Forester 2019 Lincoln Navigator 2019 Mercedes-AMG C 43 Coupe 2019 Subaru Crosstrek Hybrid Porsche unveils 2020 Taycan Turbo and Turbo S 2020 Lamborghini Sian Next-generation Nissan Juke Aston Martin Vanquish 25 by Ian Callum Autoblog plays "WRC 8" Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:     Green Podcasts Toys/Games Aston Martin Lamborghini Lincoln Mercedes-Benz Nissan Porsche Subaru Used Car Buying Coupe Crossover SUV Electric Hybrid Performance

Why Japan's government is looking to curb its adorable kei car market

Each region around the world has its stereotypical vehicle. The US has the pickup and Europe the five-door hatchback; but in Japan, the kei car reigns supreme. These tiny cars are limited to just 660cc of displacement but they've also come with lower taxes to make them more affordable. To make of the most of their small size, they've often had quite boxy styling like the Honda N-One shown above, and because they're Japanese, they've often had quirky names like the Nissan Dayz Roox. However, if the Japanese government has its way, the future popularity of these little guys might be in jeopardy. The problem facing them is that Japan is an island both literally and figuratively. After World War II, the Japanese government created the class as a way to make car ownership more accessible. The tiny engines generally meant better fuel economy to deal with the nation's expensive gas, and the tax benefits also helped. It's made the segment hugely popular even today, with kei cars making up roughly 40 percent of the nation's new cars sales last year, according to The New York Times. The downside is that these models are almost never exported because they aren't as attractive to buyers elsewhere (if indeed they even meet overseas regulations). So if an automaker ends up with a popular kei model, it can't really market it elsewhere. The government now sees that as a threat to the domestic auto industry. It believes that every yen invested into kei development is wasted, and the production takes up needed capacity at auto factories. The state would much rather automakers create exportable models. To do this, it's trying to make the little cars less attractive to buy, and thus, less attractive to build. The authorities recently increased taxes on kei cars by 50 percent to narrow the difference between standard cars, according to the NYT. If kei cars do lose popularity, it could open the market up to greater competition from foreign automakers. Several companies complained about the little cars stranglehold on the Japanese market last year, but since then, imported car sales there have shown some growth thanks to the improving economy. Featured Gallery 2013 Honda N-One View 20 Photos News Source: The New York TimesImage Credit: Honda Government/Legal Honda Nissan JDM kei kei car