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Tesla: You can't 'brick' Model S batteries

Tesla Motors today detailed measures to prevent a full discharge of the batteries in its forthcoming Model S, saying drivers of the electric sedan would have to be particularly negligent to cause a costly battery replacement.

The company published a response to a blog earlier this week that recounted the problem of "bricked" Tesla Roadster batteries. The blog claimed that five owners of the Roadster electric sports car allowed their batteries to be completely discharged, rendering them inoperable.

Tesla on Wednesday did not deny the stories of Roadster battery problems but noted that Roadsters can remain unplugged for several weeksRead more

Tesla downplays danger of 'bricked' battery

If you've invested over $100,000 into a Tesla Roadster, you might want to sign up for an alert to avoid your battery dying.

Electric-car blogs have been buzzing today over a report about a potential problem with Tesla Motors' electric cars that could turn an expensive battery pack into a "brick."

The Understatement blog said that five Roadster owners had their battery charges go to zero and that the only recourse was to replace the $40,000 battery pack. In the one case cited, the batteries died after six weeks of being idle and in another … Read more

Car Tech Live 251: U.S. goes after in-dash car tech (podcast)

Feds issue strongest position yet against distracting car tech, Tesla Model X has us excited, and confounded. Is Washington state penalizing electric car drivers? And we drive the 2012 Subaru Impreza.

Subscribe with iTunes (audio) Subscribe with iTunes (video) Subscribe with RSS (audio) Subscribe with RSS (video) EPISODE 251 SHOW NOTES

Tesla's Model X: Finally, an electric car we all want

Commentary Tesla Motors is helping destroy the notion that electric vehicles are green cars with unfortunate compromises.

The company last night unveiled the Model X, a sleek-looking cross between a minivan and SUV with clever "falcon wing" doors and a new electric all-wheel drive system. People can start placing reservations tomorrow for the Model X, which is expected to be available late next year with prices in the $55,000 to $75,000 range before tax incentives and rebates.

Beyond making an attractive crossover, Tesla has shown how electric vehicles open up new design possibilities. The Model X … Read more

Google and Stanford early adopters of Honda Fit EV

Honda's first all-electric vehicle is hitting the streets a little early.

The Honda Fit EV debuted at the Los Angeles Auto Show in November 2011, and it's expected to be available for lease this summer. However, Honda announced that Google and Stanford University got a special early delivery of the tiny EV this week. … Read more

Electric vehicles: This time it really is different

Electric vehicles have floundered into obscurity more than once in U.S. history and now they're staging yet another comeback. Regardless how this latest wave of EVs fares, electrification in its many forms is here to stay.

To give CNET readers some perspective, we've assembled a slideshow of the colorful past, hopeful present, and possible future of electric autos.

Last year was a pivotal year in the history of electrical vehicles because of the Nissan Leaf and Chevy Volt, which became available in late 2010. Sales of these cars are small in the scheme of overall volume and … Read more

Stanford pioneering a wireless electric highway

Stanford researches may have solved the problem of range anxiety by wireless charging technology that could one day create an electric highway.

Wireless recharging already is used by some electric vehicle charging stations to fill up batteries without cords or plugging into an outlet. MIT helped pioneer this technology and spun it off into a wireless charging startup, WiTricity. However, Stanford researchers improved on this concept and devised a way to transmit 10 kilowatts of electric power across a 6.5-foot distance with minimal energy loss. By overcoming transmitting electricity across a significant distance, researchers will make it possible to … Read more

Chevy Volt sales take a hit

Sales of the Chevrolet Volt and Nissan Leaf dipped in January, with Volt sales apparently hit by a now-closed safety investigation.

The volume of these high-profile electric cars sold is closely watched as a barometer of consumer demand. Several more battery-electric and plug-in hybrid models from other automakers are expected to come out this year and next.

General Motors said yesterday it sold 603 Volts in January of this year, more than the 321 it sold in January last year. GM shipped 1,529 Volts in December last year, its best month since production, although the yearly total of 7,671 was less than it had hoped. … Read more

Want better EV range? Hitch it to a fuel cell

Startup Oorja Protonics has dodged some of the traditional barriers to fuel cell vehicles, at least with forklifts. In the future, its hybrid approach could be used on cars and trucks, too.

The Fremont, Calif.-based company is in the process of raising funding from corporate partners to ramp up production of its product. The venture-backed company is also profitable, something that few other fuel cell companies can claim.

Rather than use hydrogen as a fuel, Oorja Protonics converts the liquid fuel methanol into electricity in fuel cells. And its onboard fuel cells are designed only to provide a trickle … Read more

Chevy Volt poses no elevated fire risk, NHTSA says

A safety investigation into the Chevy Volt is now behind General Motors.

The National Highway Traffic Safety Administration on Friday said that it has ended an inquiry into potential safety problems with the battery-run Chevy Volt.

"Based on the available data, NHTSA does not believe that Chevy Volts or other electric vehicles pose a greater risk of fire than gasoline-powered vehicles," the agency said in a statement.

Last year, the NHTSA started a safety defect investigation after a side-impact collision test caused a fire three weeks after the test. That and subsequent tests led GM to make modifications to reinforce the battery pack and the coolant system. … Read more