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 that fires are more common in 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 said 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.