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[MatC21]

I disagree. I aas driving on Swiss/German highway sub-zero and battery barely reached 5 degrees. Only after I was approaching a charger (30min before or so) it started heating to 25 degrees. Pre heating is essential in colder climates.

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[FirstEV]

I grew up in Stockholm! But, yeah, California is nice. I recommend it!

The battery does heat up when you use it, though. There's a reason we have liquid cooling in the battery pack... When you need to fast charge, you've been driving for three hours already. Also, when charging fast, the battery heats itself pretty quickly, so I don't quite understand how pre-heating would help that much.

But I don't have temperature data to back that up, so if anyone has that, I'd be super interested in seeing the real difference, especially depending on ambient temperatures!

Nice!

Well, I’ve been driving at over 110-139 km/h for more than an hour in temperatures below 0°C, and the battery wouldn’t budge from -1°C, or at best just creep above zero. Even then, it’s still essentially useless for DC charging without pre-heating. It’s such a big factor that car reviewers in Sweden practically write off any car that doesn’t have a heat pump. So it really does make a significant difference.

 

[FirstEV]

I disagree. I aas driving on Swiss/German highway sub-zero and battery barely reached 5 degrees. Only after I was approaching a charger (30min before or so) it started heating to 25 degrees. Pre heating is essential in colder climates.

Yes, exactly!

 

[SergeyIndy]

Yes, exactly!

Pre-heating is essential to receive the max charging performance along the entire charging curve. Just driving the car, will NOT heat up the battery. Only if you use aggressive so called yo-yo method it may heat it up while driving.

These are optimal charging conditions, and the car is smart enough not to waste energy and only start pre-heating the battery as you approach the charger, about 30 min or so away. @MatC21 is spot on with his real-world experience.

CCS fast charging station with > 270 kW, > 850V
Battery temperature 77°F
Initial SoC 9% and remaining range < 37 miles

However, if @jwatte would like to do some data gathering and compare not preheating or preheating we can all benefit. I only have a paper copy of the corporate published charging curve, so anyone can try and see how their real world charging aligns with this as best case. The main corporate boast on this slide is that Macan EV is able to use as much as 200kW output at 55% SoC. Has anyone seen this? I wish I could, but my Macan is only arriving this summer.

 

[jwatte]

the battery wouldn’t budge from -1°C, or at best just creep above zero

That's surprising and a little sad. The battery will perform better at 25C, to the point where some vehicles will spend some energy heating the battery to get there. I'm surprised Porsche doesn't do this :-( And happy about the California weather. (Although today it's almost 28C! In March! Crazy!)

This has been illuminating.

 

[ron_b]

Pre-heating is essential to receive the max charging performance along the entire charging curve. Just driving the car, will NOT heat up the battery. Only if you use aggressive so called yo-yo method it may heat it up while driving.

These are optimal charging conditions, and the car is smart enough not to waste energy and only start pre-heating the battery as you approach the charger, about 30 min or so away. @MatC21 is spot on with his real-world experience.

CCS fast charging station with > 270 kW, > 850V
Battery temperature 77°F
Initial SoC 9% and remaining range < 37 miles

However, if @jwatte would like to do some data gathering and compare not preheating or preheating we can all benefit. I only have a paper copy of the corporate published charging curve, so anyone can try and see how their real world charging aligns with this as best case. The main corporate boast on this slide is that Macan EV is able to use as much as 200kW output at 55% SoC. Has anyone seen this? I wish I could, but my Macan is only arriving this summer.

Hi @SergeyIndy I have been living vicariously from this forum and the EVKX site. The charging curve they show for all of the Macan variants (as all same battery) is:

The web site is: https://evkx.net/models/porsche/macan/macan_4/chargingcurve

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