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Does cold weather affect EV battery capacity?

Lithium-ion batteries take longer to charge when they're cold, and regenerative braking features don't work as well either. Taken together, the adverse effect of cold weather can reduce EV battery capacity by as much as 41%. Though all EVs lose some capacity in cold weather, not all of them handle winter the same way.

What temperature do EV batteries work best?

The lithium-ion batteries in most EVs work best in the 15-35-degree range. Below that the chemical process which releases electricity from the battery slows down, affecting the battery's performance. According to real-world testing by What Car? this can result in a 15-20% reduction in usable range when the temperature falls into single figures.

How cold can electric car batteries be recharged?

At -10deg C, range drops by 15%. It's also worth noting that electric car batteries can struggle to fully recharge in very cold temperatures. StoreDot claims its latest XFC battery cells can recharge up to 80% of their capacity at -10deg C.

Are battery cells more efficient in cold weather?

Better, more efficient batteries that are less susceptible to cold are being developed all the time. For instance, battery tech company StoreDot has come up with a new type of battery cell that it claims can still deliver 70% of its charge in temperatures of -20deg C – colder than the conditions during the NAF test. At -10deg C, range drops by 15%.

What happens to electric car range in winter?

Winter has officially hit the UK and the plummeting temperatures have also come with a nasty side effect for electric cars: many EV owners are realising that their batteries' performance and driving range suffers significantly in cold weather.

Are EV batteries safe in winter?

The chemistry of EV batteries means that the bold claims in adverts are adversely affected when the mercury plummets – and Parkers' research suggests that electric car range can typically drop by as much as a third in winter.