[MrMjay]

Most tests has been done with cars equipped with battery heater, indeed.

Charging speed has been confirmed by several owners using obd2 dongle, speed is limited by the minimum temperature of the battery pack (not ambient temp):
-5°C to 5°C: 50 kW
5-10°C: 65 kW
10-15°C: 73 kW
15-20°C: 115 kW
20-24°C: 180 kW
25°C and above: 215 kW

Charging will never get faster than that if battery is colder than above.

Additionally, charging speed is temperamental, with sudden ups and downs for several minutes, then suddenly resuming at higher rate. The charging curve is never identical even if charging station is functioning properly, which adds additional confusion.

Obd2 dongle helps tremendously, the charging speed can be anticipated well in advance while driving to a fast charger.

So for cars equipped with a battery warmer, there's no way to test if it is actually working during DC charging? I.e. the battery will warm-up anyway as result of the charging, and there's no indication whether the battery warmer is actually activated?

 

[Silverage]

It sounds like cars without the eco back, and therefore any of the additional heating gubbins, are totally at the mercy of whatever the ambient temperature is when it comes to the speed of the rapid charging.

In the UK it’s the P45s and whichever Ultimates have optioned the eco pack (the option is not available on SE and Premium trim as I understand it) who are in with a chance of getting the mythical 20-80% in 18 minutes and the rest of us (probably the majority of owners) get the shaft.

I’m off to have a look at the Hyundai UK website to see if any of this is mentioned.

 

[Silverage]

This is all I could find about it - I guess “can” and “up to” has them covered legally, but it’s pretty poor.

 

[JSeemann]

So for cars equipped with a battery warmer, there's no way to test if it is actually working during DC charging? I.e. the battery will warm-up anyway as result of the charging, and there's no indication whether the battery warmer is actually activated?

OBD2 dongle + car scanner. Look @ [BMS] Battery Heater 1 Temperature.
In my car this goes up and is followed (slower ramp up speed) by battery min temperature.
So I think this is "a heater" working (if that is PTC, heat pump or whatever is a different story )

 

[chrispaulin]

Using the Bluelink Energy Consumption feature in "Charging/Energy" in the Home Screen where it shows Driving/Electronic Devices/Climate Control /Battery Care I have never seen the Battery Care show any power used.
This may not be scientific but it is a starting point to check if the battery heater is working at all.

 

[JSeemann]

Using the Bluelink Energy Consumption feature in "Charging/Energy" in the Home Screen where it shows Driving/Electronic Devices/Climate Control /Battery Care I have never seen the Battery Care show any power used.
This may not be scientific but it is a starting point to check if the battery heater is working at all.

Battery care could be about caring for the 12v battery
Battery care could be about keeping the battery pack above -5 degrees
(know not - just pointing out )

 

[chrispaulin]

Battery care could be about caring for the 12v battery
Battery care could be about keeping the battery pack above -5 degrees
(know not - just pointing out )

A good point, but surely if battery care has been working some power would be used?

 

[MrMjay]

My gut feeling is that there are two separate issues here.

The first, is that the battery warmer doesn't actually work (either it does not work as planned, or it does not work at all).

The second is that there's an issue with fast DC charging, which cannot be explained simply by blaming it on the non-operative battery warmer. As others pointed out, Hyundai boast 'up to 220kW' for all IONIQ 5 cars, I.e. not just those cars fitted with a battery warmer.

 

[chrispaulin]

My gut feeling is that there are two separate issues here.

The first, is that the battery warmer doesn't actually work (either it does not work as planned, or it does not work at all).

The second is that there's an issue with fast DC charging, which cannot be explained simply by blaming it on the non-operative battery warmer. As others pointed out, Hyundai boast 'up to 220kW' for all IONIQ 5 cars, I.e. not just those cars fitted with a battery warmer.

I agree with both of these points, I have never had any evidence of Winter Mode working even when at 3C.
I have complained to my supplying dealer regarding charging speeds, they have put forward many excuses; temperature, the condition of the charger etc.
I have never seen speeds above 100KW at an Ionity 350KWh charger! At the same charging location I have seen a Polestar charging at 148KW, this seems to cut no ice with Hyundai.
They clearly have an issue but seem unable/unwilling to address it!
Getting any useful information out of Hyundai is nigh on impossible!

 

[Silverage]

Quite right. As far as I can see, for me to be able to get 220kw charging I’ve got to rock up with the battery at around 20% and with its temperature at 25° or above, and crucially there is nothing I can do in terms of how I drive or configure the car to achieve this - I am entirely dependent upon external air temperature. That’s ridiculous.

 

[JSeemann]

My battery care is at 0 - but for sure I have something heating my battery pack when charging.
Regarding winter mode -my understanding is that it only kicks in when below -5 degrees

 

[chrispaulin]

My battery care is at 0 - but for sure I have something heating my battery pack when charging.
Regarding winter mode -my understanding is that it only kicks in when below -5 degrees

The charger is heating you battery when you are at a charger. It is known as charging loss!

 

[Mikael48]

OBD2 dongle + car scanner. Look @ [BMS] Battery Heater 1 Temperature.
In my car this goes up and is followed (slower ramp up speed) by battery min temperature.
So I think this is "a heater" working (if that is PTC, heat pump or whatever is a different story )

Battery heater works correctly, but only when car is already charging.

There are more sensors in Car Scanner. "Battery Heater 1" quickly goes up, which raises the Coolant 2 Temperature, gradually followed by 16 battery modules. Battery modules do not heat up evenly (each module temp can be observed separately). Temperature of the coldest module is the Battery Min Temperature in Car Scanner, and it limits the allowed charging speed.

So I guess the PTC-heater is liquid-based and works within the battery coolant.

 

[Winocerous]

I’ve had my car since September (boggo Premium, no packs) and so far I have only ever charged it from home.

All this is going to change tomorrow though as I’m taking my son and one of his friends to see some godawful rapper in Leeds. While they are having their brains melted I’m going off to the Ionities at Leeds Skelton Lake services to give them a try (living the dream). I expect to get there on about 40% after a couple of hours of driving, outside temps about 5°C. I’m not expecting anything over 200 but I’d quite like to see something over 100. It better not be 38 like the poster above. That’s a joke.

I did more or less this journey last weekend. 1 hour 20 minute drive to Leeds Skelton Lake with temperature around 5°c.

I have a 73 RWD Premium. Charging started at 38 and didn't get any higher on the Ionity charger. FWIW, I may have a very early UK model as I've got automatic pop out for handles.

I often tend to blame the charger, but substandard speeds happen so regularly on various charging networks in my experience, I'm seriously suspecting the common factor is the car itself.

 

[exeronne]

I've got one without a battery heater (72kw battery) & have seen above 50kw. On a 120kw charger with 8c ambient I was able to get the following:

SOC 25%, Battery min temp 9c : 62kw
SOC 27%, battery min temp 10c: 69kw
SOC 33%, battery min temp 11c: 58kw
SOC 44%, battery min temp 14c: 49kw
SOC 49%, battery min temp 15c, 120kw (charger max)
SOC 50%, battery min temp 15c, 91kw
SOC 59%, battery min temp 17c, 82kw
SOC 72%, battery min temp 20c, 120kw (charger max)

I stopped charging shortly after this, it did start dropping speed, but I had what I needed to so stopped.

The battery did warm up as part of the charge, I've seen it warm up on a 50kw charger, however slower than at higher currents.

On the charge above it took 35 mins from the start to end.

Hopefully this is useful and carscanner is great for getting more info on what's going on. Min temp seems to be what determines charge speed in winter.

 

[Silverage]

I did more or less this journey last weekend. 1 hour 20 minute drive to Leeds Skelton Lake with temperature around 5°c.

I have a 73 RWD Premium. Charging started at 38 and didn't get any higher on the Ionity charger. FWIW, I may have a very early UK model as I've got automatic pop out for handles.

I often tend to blame the charger, but substandard speeds happen so regularly on various charging networks in my experience, I'm seriously suspecting the common factor is the car itself.

I’m here right now (well I’m actually in the shops part now) but it started at 69kw and appeared to be holding steady. Not the worst, but a far cry from what it should be doing.

 

[Silverage]

I’m here right now (well I’m actually in the shops part now) but it started at 69kw and appeared to be holding steady. Not the worst, but a far cry from what it should be doing.

It’s now finished and it took 38 mins to add the 30kwh it required to get me back up to 80%. I didn’t watch it all, but a bit of quick maths tells me that’s an average speed of just under 79kw.

Outside temp is 8°C and charge was started with the battery at 41% following an 80 mile trip.

 

[MrMjay]

Battery heater works correctly, but only when car is already charging.

There are more sensors in Car Scanner. "Battery Heater 1" quickly goes up, which raises the Coolant 2 Temperature, gradually followed by 16 battery modules. Battery modules do not heat up evenly (each module temp can be observed separately). Temperature of the coldest module is the Battery Min Temperature in Car Scanner, and it limits the allowed charging speed.

So I guess the PTC-heater is liquid-based and works within the battery coolant.

Thanks - but does this mean that if the car isn't fitted with the optional battery warmer, then none of this takes place?

 

[MIkeS]

He gets some good results here - Limited AWD US on a 400 mile roadtrip in WA...

 

[AshinHerts]

A good question for anyone without the Eco Pack – what do you see with car scanner? Do you see the same battery heater reading(s) as those with an Eco pack do? Does it appear to turn on when charging?


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