Kermit wrote: ↑
Fri Nov 01, 2019 10:13 am
Today's battery capacity reading was 16.5 kWh
A couple other data points since we have now had our first night of below freezing temperatures (our car is parked outside not in a garage.)
When the car is remote started while plugged in it will heat the battery to 12C (53.6F) before the battery heater turns itself off.
When the battery was hot it would cool the battery to 28C (82.4F) before the battery coolant pump would shut off.
We've had some cold nights (last night was 17F) and I have been looking to see if the battery heater was on while charging. The battery heater did not come on until I remote started the car to condition it this morning (~8am with departure set for 2PM which gets me to about 86% charged and closer to 80% charged after a remote start). I believe it must have come on at sometime because the outside air temp according to the car was 25.7F and the battery temp was 2C (35.6F) (Battery coolant temp was 33.8F). After the remote start it got up to 12C (53.6F) before turning off the battery heater.
I returned home from a short trip (still below freezing temps) and plugged it in to keep it charging while I was working on something else and when I checked again at 1PM the battery heat was on and the temperature was at 12C (55.4F on torque pro) as it approached 94% charged (again set at a 2pm departure.)
Compared to our Gen 2 Volt it's battery temp was 59F as it was nearing the end of it's charge.
It is interesting to see how low of a temperature it will charge at. The next night it is below freezing I will do an immediate charge instead of delayed to confirm if the battery heat turns on to get it to 2C and if it shuts off there or continues to heat or just just turns off until it nears the end of the charge.
With the car sitting out in the cold and not plugged and running the remote start the battery heater did not turn on with the battery reading was 3C.