[surprisingrice]

I drive a Bolt, and one of its big limitations is DCFC speed when the pack is cold: the pack only reaches full charge speed above 75F (24C), and if the pack is 55F (13C), it charges at only about half of peak rate. Also, below freezing, the pack actually cools as you drive, even at 75mph/110kmh. So on a 15F (-9C) road-trip, every DCFC stop begins at half-speed.

So I'd really like to know how the id.4 charges when cold, before finalizing my order. For example, if you stayed at a friend's apartment overnight, and your ID was parked outside at 20F, and now you're going to hit the DCFC on the way out of town... how fast can the ID charge?

And if you drive for 100 miles to the next EA charger, then has the pack cooled too much to start charging at full speed?

Since very few people had an id.4 during this past winter, maybe I need to ask id.3 drivers? I found this video

...which seems to say that an id.3 has no pack preheat. So that could be pretty bad. But then, he did some speedup/slowdown to warm his pack and got 100kw, which is great.

 

[ChristophW]

Look at this thread: The ultimate DC fast charging card for ID.4
Spoiler: Normal charge curve in the low 40s, just like at 75F, and very flat at that.

 

[ID.Furkan]

My own tests:

70 kw with a cold battery and 20% SOC with ~35 F
100 kw with semi-cold and 20% SOC 2 hours driving with 100 kph/60 mph drive with ~35 F
125 kw instantly when battery is warm >120 kph /75 mph and <10% with ~45 F

Aka.. drive abit quicker or keep jojo-ing speed/braking to warm the battery up just before charging.
Also takes around 10 minutes to heat the battery up form a dead cold start. or set a leave timer and the battery will be warmed up just before leaving

 

[surprisingrice]

takes around 10 minutes to heat the battery up form a dead cold start. or set a leave timer and the battery will be warmed up just before leaving

So the id.4 will heat the pack when preheating on the departure timer, and also when being driven? In the youtube video above, Kris Rifa (03:00) says that the id.3 "does not have preheating, either manual or automatic", so I wondered if it just never heated the pack.

 

[ID.Furkan]

Preheating to the charger yes, it doesnt have it. But if the car charges, even with 11kw, it wont be perfectly warm. just warmer then a cold start so the high consumptions on a shorter stretch will be abit lower. not perfect, but its fine.

 

[eb2143]

Bumping this thread to verify normal charging behavior at EA stations in my car

When pack temperature is less than 60 F (haven't actually checked, just based on ambient temp in 50s with short drive to charging station), I'm seeing about 60-70 kwh initial charging speed when SoC is less than 30% and normally it would be close to maximum. Charging speed today actually sped up three minutes into charging session so I think this is being driven by the car and battery pack temp...

 

[SunWizard]

At 54F (12°C) battery DCFC will max out 65Kw
63F (17°C) it will go up to 100+Kw
68F (20°C) will deliver max output if EA is actually capable delivering rated power on the box

 

[eb2143]

Thanks. That's a large gradient of charging speed for 9 degrees! hopefully an update will allow preconditioning en route for dc charger

 

[thomas_y3]

Here in SoCal LA area, I used to get about 100-126kw speed at EA stations when I start around 20%SoC. In recent months, I'd be lucky to reach high 90s. And I heard the news of OTA update coming supposed to bump max speed to 135kw... lol so I might get near 100kw or so if I'm lucky. I hope this isn't due to more n more EVs using EA stations to charge cuz it'll only get worse if it's true.