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How does cold weather affect electric vehicles?


FILE-Snowflakes lie on the charging cable of an electric car at a charging station. (Photo by Julian Stratenschulte/picture alliance via Getty Images)

Electric vehicle owners have a lot to think about when temperatures plunge in the winter beyond ensuring the heat is running in the car. Cold weather can take a toll on these vehicles, specifically the battery range. 

To determine the effectiveness of EV batteries in cold weather, AAA conducted a test to see how they perform in these conditions. 

Robert Sinclair, a AAA spokesperson, told FOX Weather described the test sharing that when electric vehicles operated in 20 degree temperatures, its range fell 41%. However, when the Norway Automobile Association conducted a similar test, RV range fell only 20%.

He also noted that non-electric car batteries are impacted by cold weather.

RELATED: Tesla supercharging station packed in Oak Brook, dead cars line parking lot due to frigid temps

Sinclair explained to FOX Weather that cold weather impacts the chemical reaction in the lithium-ion battery, which powers an electric vehicle, and it also affects a lead-acid battery that starts the engine in a gas-powered car. 

Cold weather can slow down both batteries and further diminish the battery range in EVs.

According to AAA’s website, an EVs effectiveness can depend on if the battery is “preconditioned,” this means when the temperatures are hot or cold outside, this method can heat or cool the battery to a more moderate temperature that allows it to charge and deliver electricity quicker, while extending the life of the battery. 

When managing cold conditions, EV owners can leave the vehicle plugged in or turn on the heater for 20 minutes before leaving the house. 

AAA notes that following these steps and instructions in the owner’s manual can make charging the battery easier and driving more efficient. 

While cold temps can impact EV battery performance, Sinclair tells FOX Weather that they still come in handy when the vehicles drive in snow. 

“Generally, the batteries are under the floor, and they’re big, and they’re heavy,” Sinclair said. “And when you’ve got a lot of weight in the vehicle down low like that, that lowers the center of gravity and helps to improve handling.”

The extra weight can help bolster traction for electric vehicles.  He added that getting a quality set of winter tires can manage the cold conditions and battery efficiency. 

FOX Weather contributed to this report. This story was reported from Washington, D.C.

 



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