notfred wrote: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.
Interesting! 10km range would be about 2kWh of energy. Was the car connected to the grid at that time? If not, this might be evidence of what's hinted in the service manual; that the battery heater is operated if needed even if it's not connected, as long as the SOC is high enough. The user manual only tells that the car must be plugged in for the heater to work.
My logger has recorded one occation 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.