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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.

Only 3 new cars cost under $20,000. Here’s what you should buy used instead

Looks like some more people have realized something we pointed out late last year. There are only three new cars under the magic $20,000 price limit currently for sale in the United States. Those three vehicles are the Nissan Versa with a starting price of $16,925 (all prices here include destination fee), the Kia Rio at $17,390 and the Mitsubishi Mirage at $17,650. Should push come to shove, so to speak, we'd probably pick the Nissan as our top choice among those three due to its practicality, comfort and overall polish when compared to its similarly priced peers. But really, as we've suggested before, there are better options. Our top pick for a used vehicle under $20,000 remains the Chevy Volt. It's stylish, comfortable, practical and, above all else, efficient, assuming you can plug it in at home. If you don't have access to a plug at home, you'll likely be able to find a very gently used car for the same price as one of the budget options above. We'd check out the Honda Fit, Kia Soul, Subaru Impreza, Toyota Corolla hatchback and Volkswagen Jetta from the  model years and aim for something with under 20,000 miles and with a year or two left of its factory warranty. A quick inventory search shows that some of those cars, notably the Impreza and Jetta, can even be found Certified Pre Owned in most parts of the country. For a more thorough breakdown of some of the available used-car options we'd recommend, check out our guide to the Best Cars Under $20,000. For what it's worth, with the average new car transaction price hovering alarmingly close to $50,000, we wouldn't expect to see any more options coming any time soon for well under half that sum. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Green Kia Mitsubishi Nissan Car Buying Used Car Buying Sedan

Jay Leno checks out Nissan IDx Nismo, spiritual successor to classic Datsun 510

Jay Leno may not be spending his night behind the Tonight Show desk anymore, but he's clearly not done rolling precious metal into his garage, intent on putting it through its paces after a thorough investigation. The latest machine to meet Jay on his home turf is the Nissan IDx Nismo Concept that we first saw at the Tokyo Motor Show late last year.
Leno already has love for the classic Datsun 510, which plays a cameo in the video that you'll see below, and he refers to the IDx as the spiritual successor to that car's ethos - driving fun in an affordable package. Fortunately for us, while the IDx is a showcar first and foremost, it is indeed driveable, and Leno, naturally, takes his turn behind the wheel.
Scroll down to watch the complete video below.