Cold temperatures slow lithium-ion chemistry, reducing both charging speed and effective range/capacity until the device or vehicle warms up.
For a EV, the practical impact of winter conditions shows up mainly as slower charging speed and, in extreme conditions, a temporary charging pause as a protective measure — not permanent damage in normal use.
What to do
Let a EV that’s been in extreme heat or cold acclimate for a few minutes before charging at full speed — most protective slowdowns resolve on their own once the device or battery reaches a safer temperature range.