The secret sauce is in a reliable method of non-liquid cooling using a medium called phase change material (PCM)... This passive cooling method is known to be efficient and reliable, plus it can help reduce weight compared to more complex solutions.
When an EV's charging components become too hot, the vehicle and charger negotiate a lower charge rate to help protect components. This is why the 'towel trick' works-it helps cool the components and sensors responsible for throttling the charge rate.
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