In Oak Brook, Illinois, near Chicago, television reporters found Teslas that were running out of juice while in long lines for plugs at a Supercharger station. The temperature hit a low of minus 9 Fahrenheit (-23 Celsius).
Outside of Ann Arbor, Michigan, Teslas were plugged in at six of eight charging stations Wednesday as the wind howled with a temperature of 7 degrees Fahrenheit (minus 14 Celsius). At least one driver was nearly out of juice.
It’s well known that EVs lose some of their travel range in the cold, especially in subzero temperatures like those that hit the nation’s midsection this week. Studies found that range loss varies from 10% to 36%.
EVs also don’t charge as quickly in extreme cold. Some Tesla owners near Chicago told reporters their cars wouldn’t charge at all.
Experts acknowledge that cold weather can be hard for EVs, but they say with some planning and a little adjustment, owners should be able to travel pretty much as normal.
WHAT’S THE PROBLEM?
Inside EV batteries, lithium ions flow through a liquid electrolyte, producing electricity. But they travel more slowly through the electrolyte when it gets cold and don’t release as much energy. That cuts into the range and can deplete a battery faster.
The same happens in reverse. Since electrons move more slowly, the battery can’t accept as much electricity from a charging plug. That slows down charging.
The problem is that when temperatures plunge, batteries have to be warm enough for the electrons to move. And they have to be even warmer at fast-charging stations like Tesla’s.
This story is from the January 20, 2024 edition of Techlife News.
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This story is from the January 20, 2024 edition of Techlife News.
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