Impaled battery caused blaze, Tesla says

SEATTLE — The CEO of electric car company Tesla says a battery in a Model S that caught fire this week was apparently impaled by a metal object.

Elon Musk gave more detail in a blog post Friday about the fire that became an Internet sensation and unsettled Tesla investors. He also defended the car’s battery technology.

Musk wrote in a blog post Friday that fires are more common in conventional gas-powered vehicles.

“For consumers concerned about fire risk, there should be absolutely zero doubt that it is safer to power a car with a battery than a large tank of highly flammable liquid,” Musk wrote.

The CEO said a curved metal component was apparently the culprit in causing a Tesla to catch on fire Tuesday. He says the object’s shape led to a powerful hit on the underside of the vehicle, punching a 3-inch hole through an armor plate that protects the car’s bottom.

The company said the car properly contained the blaze. The driver was able to exit the highway in the Seattle suburb of Kent before flames engulfed the front of the vehicle.

Of the estimated 194,000 vehicle fires in the U.S. each year, the vast majority are in cars and trucks with gasoline or diesel engines. Electric vehicles make up less than 1 percent of the cars sold in the U.S.

Firefighters struggled to extinguish the Tesla fire, finding that the flames reignited. Crews found that water seemed to intensify the fire, so they began using a dry chemical extinguisher.

After dismantling the front end of the vehicle and puncturing holes in the battery pack, responders used a circular saw to cut an access hole in the front section to apply water to the battery, according to documents. Only then was the fire extinguished.

Tesla shares fell sharply Wednesday and Thursday after a video of the car fire circulated on the Internet. The shares recovered somewhat Friday, rising $7.67, or 4.4 percent, to $180.98. They still finished the week with a loss of $9.92, or 5.2 percent. The shares are still up more about 400 percent.

More in Herald Business Journal

Health-care consumers need to take the lead, so get smart

David Russian, CEO of Western Washington Medical Group, writes our third essay about fixing health care.

More business, more competition for Everett kidney dialysis center

Nonprofit Puget Sound Kidney Centers sees large for-profit competitors enter state market.

Molina Medical holds fall carnival for families in Everett

Molina Medical is hosting a free event for families in the Everett… Continue reading

Leadership Snohomish County celebrates 20 years of service

Leadership Snohomish County is celebrating its 20th anniversary. The organization was launched… Continue reading

Snohomish, Monroe manufacturers honored for innovation, excellence

Two Snohomish County companies have been honored with Manufacturing Excellence awards at… Continue reading

Remodeled home tours planned this weekend

This weekend, Edmonds-based Chermak Construction will participate in the 2017 Remodeled Homes… Continue reading

Barron Heating to celebrate anniversary at Marysville showroom

Barron Heating and Air Conditioning is celebrating its 45th anniversary from 10… Continue reading

Robots on Wall Street: Slow-footed regulators lose ground

Watchdogs have to figure out how to check computers running lightening-fast algorithms.

US budget deficit hits $666B, an $80B spike for the year

The deficit issue has largely fallen in prominence in Washington in recent years.

Most Read