Technological progress is not supposed to go into reverse gear. But that is what appears to be happening in the world of batteries for electric cars after prices surged for raw materials.
Tesla, which has led the way in the development of electric vehicles, is switching the type of battery cells used for all its standard-range cars globally to one that analysts once forecast would soon become obsolete.
The Elon Musk-controlled company will use iron-based batteries in those cars, also known as lithium iron phosphate batteries.
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