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Chevy Volt, Nissan Leaf go nearly the same all-electric miles a year

Range anxiety? What range anxiety? The concept is a foreign one to those driving Chevrolet Volt extended-range plug-ins, and as a result, that vehicle's all-electric driving miles are actually pretty close to that of the all-electric Nissan Leaf. Such were the findings of a study conducted by the Idaho National Laboratory (INL), which tracked about 8,700 cars during a three-year period, including a bunch of Volts, Leafs and Smart ED electric vehicles. In short, even though the Volt's all-electric range of about 38 miles is less than half that of the Leaf's, the Volts' collective all-electric driving was just six percent lower than the Leaf's (the next-generation Volt will be even more electro-generous, with a 50-mile range). The logic makes sense considering typical US driving habits, in which a vast majority of people commute less than 35 miles a day. Additionally, Volt drivers obviously have no fear of running out of electricity, so they were far more likely to max out on that range than some Leaf drivers. Overall, the average Leaf is driven about 15 percent less than the national average of about 11,300 miles a year for all vehicles, while Volts are driven about eight percent more. Of all those Volt miles, about 81 percent were in all-electric mode. Additionally, Volt drivers recharged about 1.5 times a day, while Leaf drivers recharged about once a day, and about 85 percent of that charging was at home. As for non-home charging, about 20 percent of the vehicles accounted for 75 percent of the station use, so folks are definitely creatures of habit. Check out the INL's 22-page report here for more interesting details. Related Video: Featured Gallery 2016 Chevrolet Volt: First Drive View 24 Photos Related Gallery 2016 Nissan Leaf View 30 Photos News Source: Idaho National Laboratory via Hybrid Cars Green Chevrolet Nissan Electric Hybrid extended-range plug-in

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.

200 Nissan Leafs recalled for faulty power inverters

Nissan is going full speed ahead with strong sales for its all-electric Leaf. Unfortunately, some of those Leafs had a glitch that could stop some of those Leafs from doing the same. Credit a faulty power inverter. US Department of Transportation says the faulty power inverters may cause some Leafs to shut down unexpectedly. Thankfully, the glitch affects just 196 Leafs, all of which were produced between April 15 and 24, 2014. Official DOT information on the recall is available here and it's also pasted below. Nissan started contacting Leaf owners in late May, instructing them to bring their vehicles to certified Leaf dealers for repairs, Nissan spokesman Brian Brockman told AutoblogGreen, adding that there'd been no cases of vehicle shut downs from the power inverter. Nissan confirmed the 196-vehicle figure and isn't charging the vehicle owners for the repairs. The company is also providing loaner vehicles at no cost. The recall marks a rare bit of bad news for Nissan's electrification efforts, as the Japanese automaker has been boosting sales of the Leaf all year. Through May, Leaf sales in the US were up 36 percent from a year earlier to 10,389 units, and May sales alone had surged 46 percent from a year earlier. In May, Chrysler recalled more than 4,141 Fiat 500e models from the 2013 and 2014 model years for a similar issue. Inverter modules on those vehicles may allow coolant to seep onto electrical components, which could cause a short circuit and power loss. The recall impacted cars built between September 2012 and April 2014. Report Receipt Date: MAY 16, 2014 NHTSA Campaign Number: 14V263000 Potential Number of Units Affected: 196 Manufacturer: Nissan North America, Inc. SUMMARY: Nissan North America, Inc. (Nissan) is recalling certain model year 2014 Nissan LEAF vehicles manufactured April 15, 2014, through April 24, 2014. Due to a problem with the motor control circuit board, the inverter may fail, causing the vehicle shut down. CONSEQUENCE: An unexpected vehicle shut down increases the risk of a crash. REMEDY: Nissan will notify owners, and dealers will replace the inverter, free of charge. The recall is expected to begin on July 7, 2014. Owners may contact Nissan customer service at 1-800-647-7261. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.