Hence this discussion about the Kia Soul EV probably also applies to the Ioniq EV, because I think it has an almost identical Climate System.
We also had a discussion about the battery heater last winter. There is still a lot of uncertainty about when the battery heater will come on. At what temperature, -20C ? And does the car need to be plugged in? All quotes from the thread Re: Battery degradation
Owner's Manual wrote:High Voltage Battery Warmer System
The high voltage battery warmer system prevents reduction of battery output when battery temperature is low. If the charging connector is connected, the warmer system automatically operate according to the battery temperature. Charging time may shorten compare to vehicles without the high voltage battery warmer system. But, electricity charge may increase because of high voltage battery warmer system operation. The high voltage battery warmer system operates when the charging connector is connected to the vehicle. However, the high voltage warmer system may not operate when battery temperature drops below -31°F (-35°C)
2soul wrote:I believe I saw this activated at -20C.. take this with a pinch of salt though, as I'm not 100% certain since we didn't have too many days below -20C, and I wasn't about to sit in a cold car to find out
notfred wrote:I think the leaf battery warmer kicks in at -21C and out at -5C. I've seen one day here where the temperature during the day was below -25C and my SoulEV lost 10kms of range sitting in the car park at work.
Elmil wrote:My logger has recorded one occasion when the battery heater operated in my car. It was at work in the evening and the car had been plugged in for a few hours at below -20C, just waiting for the pre-heating timer. The log shows that some of the 8 battery modules were at -1C, and the two heater temp sensor values increased from 0C to 18C in 8 minutes, at the same time all battery temps slowly got to or above 0C.
Have also seen a discussion on the Norwegian Forum where they talk about how some imported Soul EVs do not have heat pump / battery heater.
They state - "These vehicles lacking heat pump and the battery heater, yield inferior range and longer charging times in the winter."