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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.

2020 Kia Soul vs. subcompact crossovers: How they compare on paper

At 10 years old, the 2020 Kia Soul has entered its third, and potentially best, generation yet. To get here, it fought off other boxy hatchbacks such as the Scion xB and Nissan Cube. But now it faces all new competition: subcompact crossovers. They offer similar sizes, prices and flexibility as the Soul, but with a veneer of ruggedness. But the Soul is ready with its own rugged trim, the X-Line, plus the return of its powerful turbocharged variant. To see how the Soul stacks up to the fresh competition, we've compiled vital stats on all the tall hatches. Considering the prodigious size of the subcompact crossover segment, we've limited our selection to a few options that are similarly priced and sized to the Soul, and that offer a bit of funky styling. They include the Toyota C-HR, Nissan Kicks, Hyundai Kona and Honda HR-V. There are of course many more options, and you can create your own comparisons using our Compare Cars feature. (You can also check out our Mitsubishi Eclipse Cross comparison that includes a few larger choices). In the meantime, though, check out all the numbers on our selected vehicles in the chart below, followed by analysis after. Performance, fuel economy and drivetrains The crossover segment is diverse when it comes to powertrains, with all different displacements, induction systems and drive wheels. A surprising number of these supposedly rugged and off-road-oriented vehicles (at least more than normal cars) are front-drive only. These include the Nissan Kicks, Toyota C-HR and Kia Soul. But the Kona and HR-V offer all-wheel drive, with the Hyundai offering it on both engine options. Speaking of engine options, only the Kia and Hyundai have two possibilities, either a base 2.0-liter naturally aspirated engine, or a turbocharged 1.6-liter engine. The base engines have identical outputs of 147 horsepower and 132 pound-feet of torque, but the turbo engines differ. The Soul has 201 horsepower to the Hyundai's 175, but both make the same 195 pound-feet of torque. The Kicks, C-HR and HR-V all offer just one engine option, and they're all naturally aspirated. The Nissan's engine is the smallest and least powerful: a 1.6-liter engine making 125 horsepower and 115 pound-feet of torque. The HR-V is next with a 1.8-liter engine making 141 horsepower and 127 pound-feet of torque. The C-HR rounds out the trio at 144 horsepower and 139 pound-feet of torque from a 2.0-liter engine.

Nissan battery breakthrough to double Leaf EV range within a few years

The Tesla Model S might be the headline-grabber of the electric vehicle world, but the Nissan Leaf is the segment's secret star. With over 130,000 sold worldwide since its introduction and record US sales in 2014, the little hatchback has helped its parents at the Renault-Nissan Alliance to sell over 200,000 EVs since 2010. With that much success in the EV business, there's no reason for the automaker to stop now, and according to CEO Carlos Ghosn a huge technological breakthrough is on the way to make plug-ins an attractive choice for more drivers than ever before. In an interview on Japanese TV, Ghosn confirmed that Nissan has a new battery that could allow for over 400 kilometers (249 miles) of range. New batteries could "very soon take the issue of range off of the table." – Jeff Kuhlman Ghosn was tight-lipped on the details of the tech, but Daily Kanban dug deeper. An unnamed Nissan engineer confirmed that the roughly 250-mile range would be for a Leaf-sized vehicle – a massive leap over the hatchback's current EPA-rated max of 84 miles or 124 miles in Europe. The battery reportedly offers twice the capacity, while bringing weight and costs down compared to the present version. "Commercial applications could be no more than one model cycle away," said the anonymous worker, making the innovation sound even more tantalizing. Lending even more credence to this major battery innovation, Nissan spokesperson Jeff Kuhlman told Daily Kanban: "We continue our R&D efforts because we believe that we can do more with battery electric, and very soon take the issue of range off of the table." Renault-Nissan is betting a huge portion of its chips on the future of battery electric vehicles. The company even tried stuffing a 48-kilowatt hour pack into a Leaf for an event in Spain last year. While not its primary focus, the automaker is hedging its bets slightly by working with Daimler and Ford on fuel cell innovations, as well.