As winter is coming, there are more chances that I need to charge in public station below 0 degree (C). But I remember reading somewhere that battery degrades faster when charge at low temperature. Can anyone comment on this?
Personally, I wouldn't worry about it. You can go to Battery University and read up on lithium batteries. https://batteryuniversity.com/
The Canadians have dedicated battery warmers. Here in the US we have a thermistor system. With a thermistor, internal resistance is higher at lower temperatures. Thus, initial charge energy does not go into the battery but is lost as heat-heat that warms the battery. As the thermistor heats up resistance decreases and charge starts to go into the battery. I don’t believe that the thermistor system is as robust as the dedicated battery warmer or else the Canadians wouldn’t have a different system. That said the operators manual says that at -22F the car will not start. One could assume that above that temp it is okay to charge. Sent from my iPhone using Inside EVs
