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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.

Recharge Wrap-up: Mitsubishi Outlander PHEV Finishes AXCR, Nissan Leafs drive 528 million collective miles

The Mitsubishi Outlander PHEV has successfully completed the Asia Cross Country Rally 2014. The plug-in Mitsu finished first in the EV class, and 14th overall, clocking in at 19 hours, 17 minutes and 12 seconds. For its second year in the competition, the Outlander PHEV used a new suspension with more ground clearance to help it tackle the race's treacherous terrain. Besides the glory of taking on the challenging competition, the rally helped Mitsubishi gather valuable data for EV development. The race took place over 1,367 miles of varied terrain from Thailand to Cambodia. Read more at Hybrid Cars, or visit Mitsubishi UK's Facebook page. Nissan Leaf drivers have driven more than 528 million miles worldwide. That accounts for a reduction of 150,000 tons of carbon dioxide emissions since the EV's 2010 launch. Nissan projects that Leaf drivers will surpass a collective 1 billion electric kilometers (621 million miles) by January 2015, or perhaps even sooner if sales keep increasing. The mileage data was collected through the car's CarWings telemetry. Read more at Green Car Congress. 40 percent of luxury cars will be powered by some form of electrification by 2030, according to Audi. Whether it's battery-electric, hybrid, or plug-in hybrid, electrons will be doing their share to get the well-heeled from place to place. According to an article at The Sydney Morning Herald, PHEVs are "the most promising option." The BMW i8 is a fine example, as is the Porsche Panamera S E-Hybrid, and Audi and Mercedes-Benz have plug-in plans of their own. Lexus, not so much. Read more at The Sydney Morning Herald. PGA golfer Hunter Mahan has taken delivery of a BMW i3 he won by scoring a hole-in-one. BMW offered a free, all-electric i3 to the first player to score a hole-in-one in the 2013 BMW Championship at Conway Farms Golf Club, which Mahan did on the 17th hole. The BMW Championship raised money for Evans Scholars Foundation. BMW Hole-in-One Scholar Melyzjah Smith, who was awarded a full four-year college tuition and housing scholarship in honor of Mahan's slick shot, was on hand to meet the golfer as he received his i3. Read more in the press release below. Uber has hired President Obama's 2008 campaign manager as its senior vice president of policy and strategy. David Plouffe will help the ride-hailing app navigate government policy and relations. The Taxicab, Limousine and Paratransit Association didn't think the move was a good one.

These are your top 10 worst-selling vehicles of 2012

Despite 2012 being the best year of auto sales this country has seen since 2007, not every vehicle got an equally large share of the sales pie. Some barely got a sliver, as evidenced by this year's list of the top 10 worst-selling vehicles of 2012. We've dug through sales data from every automaker to come up with this year's list and, like last year, we've set some parameters to ensure it includes legitimately bad-selling vehicles. The first parameter is a starting MSRP under $100,000, which automatically excludes what's parked in most one-percenters' garages. We're also excluding vehicles cancelled in 2012, even if they garnered sales through the end of the year while dealerships sold off remaining inventory. This includes models like the Mitsubishi Eclipse, Mercedes-Benz R-Class and last year's worst-seller, the Acura RL. Next, vehicles are considered as they are reported by the automaker, which means that, while sales of the Murano CrossCabriolet were probably low enough to make the list, because Nissan reports only one number for all Murano sales, it was excluded. Cadillac, however, reports sales of the Escalade EXT separately from the Escalade, hence its repeat appearance. Finally, there was the question of whether or not eligibility should be given to Suzuki vehicles, as the brand announced in November that it would end sales in the US as soon as its current inventory ran out. We decided Suzuki vehicles should be included as the brand was offering 2013 models at the time of the announcement, and as far as we can tell, inventory levels remained high enough to satisfy demand through the end of the year. Without further ado, below are the top 10 worst-selling vehicles of 2012. Top 10 Worst-Selling Vehicles of 2012 10. Volvo C30 MSRP: $25,500 Units Sold: 2,827 Last Year: – 9. BMW Z4 MSRP: $47,350 Units Sold: 2,751 Last Year: – 8. Audi TT MSRP: $39,545 Units Sold: 2,226 Last Year: – 7. Subaru Tribeca MSRP: $32,595 Units Sold: 2,075 Last Year: 10 6. Suzuki Equator MSRP: $19,449 Units Sold: 1,966 Last Year: 7 5. Cadillac Escalade EXT MSRP: $63,060 Units Sold: 1,934 Last Year: 6 4. Nissan GT-R MSRP: $96,820 Units Sold: 1,188 Last Year: – 3. Acura ZDX MSRP: $50,920 Units Sold: 775 Last Year: 4 2. Mitsubishi Lancer Sportback MSRP: $18,495 Units Sold: 702 Last Year: 3 1. Mitsubishi i-MiEV MSRP: $29,125 Units Sold: 588 Last Year: – Want a little more "worst-selling" data? Check out our list of the top 10 worst-selling vehicles of 2011.