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The English manual says on page 1-37 "During cold weather, DC charging may not be available to prevent high voltage battery degradation."

Does it mean I may be travelling in winter and find myself unable to charge the car en route??
 
I think I saw a battery heating option on one of the EU pages. I expect this to be included as standard equipment. For very cold you need battery conditioning for any EV to DC fast charge – at least at a fast rate. For example, if you tell a Tesla you are stopping to charge, it will automatically start the battery heating at the appropriate time.
 
Hyundai prefers you charge on AC instead of DC to increase battery life, but in cold weather you need to warm up your battery before charging on DC. This is possible until -35 deg Celsius, then the battery heating systems stops.
35201
35202
 
At -40C a deep breath can kill you from shock. Steel becomes brittle and lubricating oil is solid. Happens occasionally at the Canadian ski resorts. Everything comes to a standstill until it warms up. That is one of the likely locations where someone with an EV might be wanting to charge their car - and will also have to wait until it warms up a bit..
 
Do they mean that the battery itself is at a temperature below -35c, or the ambient air temperature? I cannot believe that the battery management system would ever allow it to become that cold.
Hyundai said in the manual “if the battery temperature drops below -35 deg C, the high voltage warmer system may not operate”
 
I could understand why the battery can't warm itself at low temperatures, because that would mean it is discharging while cold. What stops a plugged in heater from working in the cold?
Electronic components are classified under normal grade (0 -> 70 deg C) or military grade (-35 -> 150 deg C) for automotive. (AEC200) There are components that have an even larger temperature range, e.g. from -50 -> 200 deg C. C, but it is the weakest electronic component that determines the temperature the whole can withstand.
 
Hyundai said in the manual “if the battery temperature drops below -35 deg C, the high voltage warmer system may not operate”
I had no idea that the batteries were rated for such temperature extremes. If the car is plugged in, is there any temperature management of the battery when the car isn’t charging? Will the car precondition the battery if you have scheduled a departure time?
 
At -40C a deep breath can kill you from shock. Steel becomes brittle and lubricating oil is solid. Happens occasionally at the Canadian ski resorts. Everything comes to a standstill until it warms up. That is one of the likely locations where someone with an EV might be wanting to charge their car - and will also have to wait until it warms up a bit..
Like until Spring?🤣

[edit: saw a BMW dug out of 3 metre snow drift at ski fields one Spring. They jump started the battery & it worked, kind of. If you don’t mind huge plumes of black smoke coming out the exhaust pipe]
 
I had no idea that the batteries were rated for such temperature extremes. If the car is plugged in, is there any temperature management of the battery when the car isn’t charging? Will the car precondition the battery if you have scheduled a departure time?
When the car is plugged in, you can charge the car on AC until 100% which heats up the battery and electronics, but once at 100%, you need to keep the car warm inside at extremely low temperatures under “sheduled Charging and Climate”, which also heats up the battery. You could regularly retard your start time via Bluelink and also leave the battery heater on until the worst of the cold is over.
 
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