camelot-forum.co.uk

Why are Teslas’ batteries dying in the cold?
Freezing temperatures across central US have cut electric vehicles’ range and left drivers facing long waits at charging stations
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Bruce Westlake, president of the Eastern Michigan Electric Vehicle Association, said most EVs are programmed to warm the battery if the driver tells vehicle’s navigation system that a trip to the charging station is coming.

Many of those who think their cars won’t charge are new to EVs and don’t know how to “precondition” their batteries, said Westlake, who has two Teslas.
“They’re just learning,” he said. “And Tesla isn’t very good at explaining some things.” A message was left seeking comment from Tesla.

In frigid temperatures, it can take a half hour to warm the battery so it is ready to charge, Westlake said. Preconditioning the battery does cost some range, although it is usually only a few miles, he said.
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