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- Macan 4S, Audi RS5
It'd have to be below 0C for preheating to kick in. There's no point to doing it unless the battery is more than 10C out of the ~10-30C ideal range.Interesting, what's the source of this info? I'm pretty sure it worked like this last time I charged my car in 0C temps which was like over the weekend but TBH driving fast also brings the battery temp up.
Sort of. People really are spending way too much time thinking about preconditioning. It doesn't do very much for most cars in most conditions.In my mind it should works like this:
If you select a charging destination and the battery temperature is outside the optimum range it will heat/cool the battery as necessary.
The car will always try to manage battery temperature so that it stays in the ideal range (within the bracket). There's really no such thing as "pre-cooling" for fast charging because the car will kick in the cooling system whether you have a charging destination or not once the battery gets too warm. Similarly, it will warm the battery when it's cold outside, again regardless of your destination.
The only thing "pre" conditioning changes is a little bit of the logic around how far out of the ideal range it allows the car to get so that you can save 1-3 minutes at the charging stop. Preheating wastes power and so the car won't do it if you're very low on range (trading 10 miles of range for an ideal battery temperature is a bad idea if you're going to run out before you get to the charger). When it's very hot out, it also will cool a little more aggressively so it doesn't hit the thermal limit and slow charging. It is virtually impossible to gain or lose more than 5 minutes of charging time as a result of preconditioning.
It is a tiny convenience feature like tilt-down mirrors or active aero shutters, not a significant part of the car's range or charging performance.
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