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Nissan Leaf battery cells put through torture test, live to charge again

One minor chink in the armor of the Tesla Model S is that a small number have caught fire, once their battery packs were penetrated. Nissan Leaf drivers, however, might just be able to weather such an event without an ensuing CarBQ. Our evidence for such a claim? A video that has surfaced of cells from a Leaf pack undergoing a battery of torture tests (pun somewhat-ashamedly intended). Shared by folks at the Hybrid Auto Center in Las Vegas – who offer for sale, among other things, used Leaf lithium battery modules – the footage shows salvaged cells being brutally assaulted with a screwdriver, and later, a propane torch. Granted, these tests are not the same thing as flinging a piece of metal into a working pack at 70 miles per hour, but they do claim to show that a puncture does not always equal a fire. Oh, and don't try this at home. When pierced through by the flat head tool, there is no explosion or eruption of flame. Instead, a rather modest wisp of smoke shyly emerges as the electrolyte next to the shorted area of the fully-charged foil pouch reacts with the influx of oxygen. Again and again, the blade descends, until the cell is riddled with holes. No fire. Amazingly, when connected with a voltmeter afterward there are still plenty of signs of life, and when it is charged and discharged (off-camera), it reportedly suffers only a slight loss of charge capacity. The video goes on to show another cell attacked with open flame with similar results. While the demonstration is, perhaps, somewhat crude, the message it sends is loud and clear: lithium batteries can be safe and rather robust, despite some freak accidents. Scroll below to watch the short presentation for yourself. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Recharge Wrap-up: Reverse graffiti powered by Nissan Leaf; BMW introduces Wallbox Pro

BMW has a new, faster version of the Wallbox home EV charger. The Wallbox Pro offers 7.4 kilowatts, and can charge the BMW i3 to 80 percent in under three hours. It features a seven-inch touchscreen and proximity sensor, plus an 11.5-foot cord. The Wallbox Pro can also be used with smart home systems such as lighting and heating. The Wallbox Pro is available in Europe, and will come to the US later in the year. Read more at Hybrid Cars. Nissan is using the Leaf to power the creation of "reverse graffiti" in London. The company has commissioned artist Moose to selectively wash dirt off of a wall outside of a subway station, leaving behind a mural of London landmarks. Moose used a jet washer powered by the Leaf's battery to create the piece. The goal is to highlight the amount of pollution in London and other large cities, which is not a new idea. "It is a reminder that electric vehicles don't have an exhaust to emit the kind of air pollution which has stained the wall Moose has created his piece on," says Nissan's Jean-Pierre Diernaz. See the artwork in the gallery, and read more in the press release below. Local Motors used a 3D printer to make the Strati electric car in 44 hours. The car was printed with 212 layers of carbon-reinforced ABS thermoplastic. After printing, the team then spent two days finishing the car to make it run. It is powered by the drivetrain from a Renault Twizy, and is capable of 40 miles per hour. Now the question is if this sort of small-scale car manufacturing using 3D printing technology will catch on. See how a car gets printed in the time-lapse video below, and read more over at Treehugger. Nissan cleans up London with the world's first car-powered graffiti - Nissan LEAF powers "Reverse Graffiti" street art in Waterloo - Mass-scale mural imagines a cleaner London, without car fumes - The artwork is on show in Waterloo, London near popular Southbank LONDON – Nissan is highlighting London's battle with air quality in the UK by using the 100% electric Nissan LEAF – the world's best-selling electric vehicle (EV) – to power a striking piece of street art in Waterloo, London that depicts the capital's iconic skyline. Nissan commissioned Reverse Graffiti artist Moose – the founder of his field – to create the mass-scale mural, which was unveiled today. Unlike traditional graffiti, Moose creates his art by cleaning dirt off surfaces using a jet washer or wire brush, leaving a striking design in negative on the wall.

Recharge Wrap-up: Comparing Nissan Leaf performance by climate, natural gas iffy for trucks

A new Carnegie Mellon University study looks at the effects of regional climate variations on the Nissan Leaf. The study shows (unsurprisingly) that the ambient temperatures of different regions have effects on battery performance and the use of climate control, both of which affect range. Efficiency and grid mix determine regional differences in emissions per mile. CMU enumerated many of the differences in performance across the US. For instance, on the coldest day of the year, maximum range can be 70 miles on the Pacific Coast, while it is less than 45 miles in the Upper Midwest. These differences in efficiency can also affect adoption patterns. Read more at Green Car Congress. Battery charger manufacturer CTEK has licensed WiTricity wireless charging technology. CTEK looks to commercialize the wireless power transfer tech for use with electric vehicle batteries, making the "plug-in" aspect of EV charging unnecessary. WiTricity's charging technology stands out for its ability for distance charging via magnetic near field. "We are excited to be on the forefront of the next generation of battery charging products for consumers and industry, and look forward to leveraging WiTricity's ground-breaking technology to bring a new level of convenience and ease of use to market," says CTEK CEO Jon Lind. Wireless charging is convenient for the public, but also especially useful for emergency vehicles, which need to be ready at a moment's notice but also keep electrical systems online while the car is parked. Read more at Green Car Congress or at the WiTricity website. Switching heavy trucking fleets from diesel to natural gas could make economic sense, but the environmental benefits aren't as certain, according to a new study from UC Davis and Rice University. Certain regions - particularly California, the Great Lakes and mid-Atlantic regions - could benefit from the switch with minimal investment. "But to have an environmental advantage for reducing greenhouse gas emissions would take significant policy intervention," says Amy Myers Jaffe, executive director for Energy and Sustainability at UC Davis. This would mean stricter efficiency standards for natural gas trucks, as well as stronger regulations for methane leakage. Read more in the press release from UC Davis below.