Volkswagen ID.3 Forum

Posted: **Fri Dec 04, 2020 11:15 am**

This article pretty much answers my question ( https://www.sciencedaily.com/releases/2 ... 093718.htm )

Cold battery temperature = Slower "Fast" and "Rapid" charging speeds

Posted: **Sun Mar 28, 2021 5:01 pm**

Coopear wrote: ↑Thu Nov 26, 2020 3:31 pm Ok, I’m writing this while I sit plugged into an ionity rapid charger (capable of upto 350kW), charging at around 60kW. I thought I’d phone them up and ask why it wasn’t maxing out at 100kW...

Turns out there’s a few potential reasons. Optimum charging speed relies on several things:
- a battery <20% or >80% will be charged slower
- battery temperature. Ionity describe the optimum is to have been driving at highway speeds for 30 or 40 minutes prior to arriving at the charge point ensures battery is warm.
- external temperature, optimum is 15 to 25C

I missed all the above so maybe 60 isn’t too bad. I might try preconditioning the battery at home next time and see if it improves.

So I'm a little confused after reading this. I've only had the car two days and I thought I'd try out a couple of different chargers.

First time I'd been driving around 50-60mph for about 25 minutes, parked up using a 125kw charger (instavolt), 60% battery remaining. 14.5 degrees outside. Only got 31 kw/h charge.

Second time I had 70% remaining and went to a 22kw pod point at a tesco. Bit colder as it was late in the day (7 degrees outside) and I'd only driven two miles to get there, only got an 11 kw/h charge.

The instavolt one though is weird, it should not be that slow surely?

Posted: **Sun Mar 28, 2021 5:40 pm**

The tesco pod point is an AC charger isn't it? so the max the id3 can charge is 11kw/hr, don't know why you had problems with the instavolt.

Posted: **Sun Mar 28, 2021 6:32 pm**

BrezzoK wrote: ↑Sun Mar 28, 2021 5:40 pm The tesco pod point is an AC charger isn't it? so the max the id3 can charge is 11kw/hr, don't know why you had problems with the instavolt.

Yes, after reading up you're right I will only get 11kw out of that.

I presume my battery just still wasn't hot enough to get a higher kw/hr from instavolt.

Posted: **Sun Mar 28, 2021 10:16 pm**

I think sometimes you don't get full speed out of rapid DC chargers because the chargers have grid load balancing circuitry, if the local grid is close to its limit the charger will dial down the charge rate so as not to overload the grid. My nearest rapid charger is Osprey, I've never seen that one give less than its stated capability. But another local charger, a BP Pulse unit in the middle of a housing estate, has charged my car considerably slower than its spec indicates.

Posted: **Sun Mar 28, 2021 11:31 pm**

Since this thread is still going and I haven't seen this posted yet, I think this graph can clear up a lot of confusion about speeds and when you can expect what charge rate:
https://cdn.motor1.com/images/custom/fa ... astned.png

That said, please do note that the graph is created under ideal conditions where it actually tops out at 100 kW. As has been mentioned multiple times, temperature can affect this on the car side and then there are a set of variables that can affect it on the charger side as well. Hope it helps!

Posted: **Mon Mar 29, 2021 6:52 am**

Emanuel wrote: ↑Sun Mar 28, 2021 11:31 pm Since this thread is still going and I haven't seen this posted yet, I think this graph can clear up a lot of confusion about speeds and when you can expect what charge rate:
https://cdn.motor1.com/images/custom/fa ... astned.png

That said, please do note that the graph is created under ideal conditions where it actually tops out at 100 kW. As has been mentioned multiple times, temperature can affect this on the car side and then there are a set of variables that can affect it on the charger side as well. Hope it helps!

Thanks for posting that. Certainly makes sense, however doesn't quite correlate with how things are sold "rapid charging in an hour up to 80%." The way this reads, even in ideal conditions is, rapid charging until 50-60% and then semi rapid after that.

I'm going to try it out at my local place in different weather and states of charge to see what differences it makes.

Posted: **Mon Mar 29, 2021 8:18 am**

CarterHounslow wrote: ↑Mon Mar 29, 2021 6:52 am "rapid charging in an hour up to 80%"

50kW is classed as rapid, I've done it many times and the slowdown beyond 80% isn't huge right up to 90% (the furthest I've taken it so far)

Posted: **Mon Mar 29, 2021 3:04 pm**

DC rapid charging for us has been great, the free 50kW chargers (that work) are extremely quick, typically around 45kW after a 15 minute drive.

As Scott says, we too have not really noticed much change from 80 to 90.

I have to say that with a rapid charger running it’s caught me out a couple of times and charged up to 100%, fortunately always before a 2 hour drive.

The only place we have achieved 11kW charging (AC) has been at home, nowhere else works, after nearly 4 months of experimentation.

Posted: **Mon Mar 29, 2021 3:24 pm**

Anduain wrote: ↑Mon Mar 29, 2021 3:04 pm DC rapid charging for us has been great, the free 50kW chargers (that work) are extremely quick, typically around 45kW after a 15 minute drive.

As Scott says, we too have not really noticed much change from 80 to 90.

I have to say that with a rapid charger running it’s caught me out a couple of times and charged up to 100%, fortunately always before a 2 hour drive.

The only place we have achieved 11kW charging (AC) has been at home, nowhere else works, after nearly 4 months of experimentation.

You get 11kW at home. Is that a perk of the Spanish electrical system?

Posted: **Mon Mar 29, 2021 4:20 pm**

G43FAN wrote: ↑Mon Mar 29, 2021 3:24 pm
Anduain wrote: ↑Mon Mar 29, 2021 3:04 pm DC rapid charging for us has been great, the free 50kW chargers (that work) are extremely quick, typically around 45kW after a 15 minute drive.

As Scott says, we too have not really noticed much change from 80 to 90.

I have to say that with a rapid charger running it’s caught me out a couple of times and charged up to 100%, fortunately always before a 2 hour drive.

The only place we have achieved 11kW charging (AC) has been at home, nowhere else works, after nearly 4 months of experimentation.
You get 11kW at home. Is that a perk of the Spanish electrical system?

We have 3 phase leccy and had the Elli charger installed after VW offering us a major discount on it.

Posted: **Tue Mar 30, 2021 7:09 am**

Anduain wrote: ↑Mon Mar 29, 2021 4:20 pm
G43FAN wrote: ↑Mon Mar 29, 2021 3:24 pm
Anduain wrote: ↑Mon Mar 29, 2021 3:04 pm DC rapid charging for us has been great, the free 50kW chargers (that work) are extremely quick, typically around 45kW after a 15 minute drive.

As Scott says, we too have not really noticed much change from 80 to 90.

I have to say that with a rapid charger running it’s caught me out a couple of times and charged up to 100%, fortunately always before a 2 hour drive.

The only place we have achieved 11kW charging (AC) has been at home, nowhere else works, after nearly 4 months of experimentation.
You get 11kW at home. Is that a perk of the Spanish electrical system?
We have 3 phase leccy and had the Elli charger installed after VW offering us a major discount on it.

Ahhh Thanks for the explanation, is that peculiar to your set up or is 3 phase more common?.. V. Handy anyway and a bit quicker again than the 7.4kW us on single phase are allowed.

Posted: **Wed Mar 31, 2021 6:28 pm**

I did have a much better speed today, so having seen that graph it makes more sense. I pulled up at my local instavolt centre which is up to 125kw/h, been driving around for two hours and 20 degrees outside, got up up 80 kw/h which isn't bad. Only did it for 5 minutes though, as I just wanted to test it out.

Posted: **Fri May 14, 2021 1:25 pm**

With 10 degress celcius Outdoor temp and a starting soc between 5% and 15% i have not been able to get more than 70 kWh speed on ionity was expecting 100 kWh speed

Charging is free (2000 kWh gift from vw, we charge plus)

Is this the reason for reduced Charging speed?

Posted: **Fri May 14, 2021 3:17 pm**

Stduu wrote: ↑Fri May 14, 2021 1:25 pm With 10 degress celcius Outdoor temp and a starting soc between 5% and 15% i have not been able to get more than 70 kWh speed on ionity was expecting 100 kWh speed

Charging is free (2000 kWh gift from vw, we charge plus)

Is this the reason for reduced Charging speed?

How long and hard had you driven before arriving at the Ionity location?

The fact that it's free (with your credit) is not the reason.

Posted: **Fri May 14, 2021 4:25 pm**

Various time and speed befote arriving to Charging Station.

1.50 km with speed of 70 kmh
2. 130 km with speed of 110 kmh
3. 60 km with speed of 110 kmh

Outside temp spprox 10 degress celcius

All 3 scenarious rwsulted in peak Charging of 70 kWh

Wathing numerous YouTube videos on Charging the id. 3 something seems wrong

Posted: **Fri May 14, 2021 8:48 pm**

But was that constant speed or with strong accelerations? You understand I’m thinking about battery temperatures...

Don’t forget that the charge point may also not have been capable of pushing a higher rate at the time, you don’t say if it was always the same one or different ones.

I’ve only charged at a 100kW once, the vast majority has been at a 50kW and that usually gives me a rate of about 48-49kW.

Posted: **Sun May 23, 2021 6:20 pm**

Driven 100km to this Ionity charger, currently charging at 300km/h (30%)

Posted: **Sun May 23, 2021 6:49 pm**

Explain this one to me then. I had 15% left today and rocked up at a 150kw/h chargers today after driving for hour. 66 kw/h max. Why?

Posted: **Wed May 26, 2021 8:23 pm**

I think, and could be very wrong, that the maximum DC charge is 100kw/h and I do vaguely remember reading somewhere that even that is subject to a software update, might have been 2.1.

Could be that the charger could only deliver that load due to other draws.

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What’s Up with the charging speeds ?

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