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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.

Nissan Frontier and a mid-engine Mustang | Autoblog Podcast #622

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by News Editor Joel Stocksdale and Associate Editor Byron Hurd. They discuss news about the 2020 and 2021 Nissan Frontier, as well as a mystery Mustang and classic luxury coupes. After that, they talk about cars from the fleet including Chevy Silverados and the long-term Volvo S60 T8. Autoblog Podcast #622 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 2020 and 2021 Nissan Frontier updates 1966 mid-engine Mustang prototype Personal luxury coupes Cars we're driving 2020 Chevy Silverado 1500 Trail Boss 2020 Chevy Silverado 2500 HD 2020 Volvo S60 T8 plug-in hybrid Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Datsun reveals new On-Do budget sedan in Russia [w/video]

When Nissan revived the Datsun brand name, it essentially hit the "undo" button on the rebranding it undertook decades ago. But this time, the Datsun name is being used solely as a budget brand for developing markets. The reborn marque launched in India this past July with its Go hatchback, returned in September with the Go+ minivan and revealed the Redi-Go concept just last month. And now it's back again with the new On-Do sedan.
Launched in Moscow by CEO Carlos Ghosn, the On-Do was designed and engineered in Japan specifically for the Russian market - Nissan's fifth largest worldwide - where it will be built at the AvtoVaz plant in Togliatti. Decidedly budget-oriented, the Datsun On-Do is a four-door, five-seat econo-box measuring 172 inches long, 67 inches wide and 60 inches tall with an 18.7 cubic-foot trunk which Datsun describes as class-leading. Punctuating an otherwise bland shape is a large front grille and lighting front and rear that looks (and very well might be) bigger than the wheels.
Not that the Datsun On-Do needs a big contact patch to transfer power to the road: motivation is provided by a 1.6-liter engine with a grand total of - wait for it... wait a little longer - 87 horsepower. Which might strike you as a reasonable amount of muscle, considering the 400,000 rubles Datsun is getting for the On-Do (but consider that translates to about $11,300). That's a couple grand more than what Nissan gets for the Micra in that other giant northern country, or about the same amount it gets for the Versa in the US (which sells in Russia for 499k in rubles) - both of which are powered by what is in all likelihood the same 1.6-liter four but producing 109 hp. Of course Russia has different tax rates than the United States or Canada, but with such little power, the Datsun would fall into Russia's lowest tax bracket.