Soc in ABRP app not corresponding with Skoda app.

[Blue Thunder]

Since last week i've been using the ABRP in combination with an OBD dongle. Some trouble to get it to connect, but that worked eventually. But i notice that when the car is fully charged, and the Skoda app shows a soc of 100%, that ABRP starts with 94%. When i drive and the soc goes down the difference gets smaller to 1 or 2 % but it is never the same.

Anybody has the same issue, or can tell me why that is?

[TomTomZoe]

Hi @Blue Thunder

Normaly ABRP uses the gross SOC of the battery.

The cockpit display shows the useable (net) SOC.

94% gross SOC = 100% useable SOC

~6% gross SOC = 0% usable SOC.

There is a safety buffer in the lower and upper area of batteries that cannot be used.

 

Compared to my Opel Ampera-e: When the cockit display shows 100% useable SOC, OBD Torque Pro and also ABRP show "only" 96,7% (gross) SOC.

Edited February 1, 2022 by TomTomZoe

[Samuel-ABRP]

Hi,

We don't have a value for display soc so we estimate a value based on BMS soc. It worked very well with id3 and id4 so far on 58 and 77kWh battery. Which battery do you have?

[Blue Thunder]

8 hours ago, Samuel-ABRP said:

Hi,

We don't have a value for display soc so we estimate a value based on BMS soc. It worked very well with id3 and id4 so far on 58 and 77kWh battery. Which battery do you have?

Hi

My Citigo has the 32.8kWh (nett) battery.

This afternoon i had again 100% according to the skoda app, and 93% according to ABRP. After driving 64km, my car showed 69% and the ABRP showed 67%.

[Samuel-ABRP]

Ah sorry I thought you were talking about the Enyaq. We can try the same estimation on Citigo as well as we do for ID vehicles. I'll update it and let you know, then you can provide some feedback.

[Blue Thunder]

11 hours ago, Samuel-ABRP said:

Ah sorry I thought you were talking about the Enyaq. We can try the same estimation on Citigo as well as we do for ID vehicles. I'll update it and let you know, then you can provide some feedback.

Also i notice that the expected soc for a trip is now very far off. In the picture you can see what is happening. Its not just this instance, but since i use the OBD the ABRP caculates about only half of the consumption that i use in reality. Even with the premium, this happen. Before i started using the OBD the prediction ussually was quite accurate,within 1 or 2 %. But now it expects an consumption of 17%, but in reality it is double that.

[Samuel-ABRP]

How many km did You drive yet with telemetry? It takes a bit until a good consumption curve is built. Also current weather conditions with cold weather and short trips also make it not work so well as the heating on short trips changes consumption quite a bit.

 

[Blue Thunder]

i think i drove 500km by now. But i dont see that it becomes more accurate. 

[Samuel-ABRP]

So when you check the consumption values in mydrives, do they look reasonable?

[Blue Thunder]

i dont see consumption in the data. but according to the Skoda app it should be 15.1kWh/100km. That seems to be right to me.

2022-02-03_17_08.xlsx

[Jason-ABRP]

Consumption is measured primarily using power and speed, can you look at some historical drives and make sure your speed looks right, and also check against any recent charge sessions, make sure the power readings look correct?

To correct the SoC discrepancy, could you provide a series of displayed vs raw SoC points (maybe every 10 from 10-100%)? We can come up with a conversion factor from there.

[Jason-ABRP]

On 2/1/2022 at 2:02 PM, TomTomZoe said:

Hi @Blue Thunder

Normaly ABRP uses the gross SOC of the battery.

The cockpit display shows the useable (net) SOC.

94% gross SOC = 100% useable SOC

~6% gross SOC = 0% usable SOC.

There is a safety buffer in the lower and upper area of batteries that cannot be used.

 

Compared to my Opel Ampera-e: When the cockit display shows 100% useable SOC, OBD Torque Pro and also ABRP show "only" 96,7% (gross) SOC.

Hmm, I thought we used a different PID for the Ampera / Bolt which provided display SoC.  I know it exists in the PID list for Torque.

[Blue Thunder]

5 minutes ago, Jason-ABRP said:

Consumption is measured primarily using power and speed, can you look at some historical drives and make sure your speed looks right, and also check against any recent charge sessions, make sure the power readings look correct?

in the mydrive date, i see that @100km/h the power is about 7.7 kW. But i know from the cars trip computer that consumption at a 100km/h is about 16 - 18 kwh/100km. And that appears to be ok, as i have with these conditions a range of about 180 km (battery capacity 32.8kwh).

[TomTomZoe]

On 2/1/2022 at 9:02 PM, TomTomZoe said:

Compared to my Opel Ampera-e: When the cockit display shows 100% useable SOC, OBD Torque Pro and also ABRP show "only" 96,7% (gross) SOC.

Sorry, I have to correct myself:
The gross SOC is only shown on my Torque Pro Display , ABRP uses the Cockpit/Display SOC:

!Battery Level Displayed,SoC Display,228334,A*100/255,0,100,%,7E4

Edited February 4, 2022 by TomTomZoe

[Blue Thunder]

Drove this evening a longer stretch. Started with 96% according to the car, and 91% according to ABRP. Arrived home with 6% according to the car, but according to ABRP it was at 14%. This is really annoying, its now much more inaccurate with OBD and premium compared to driving without OBD and the free ABRP.

[Samuel-ABRP]

Please provide the information @Jason-ABRP asked for so we can correct the soc and check if that improves the situation.

[Blue Thunder]

that will take some time.
I'll write them in this comment and update it anytime i've a new one.

Car SOC/ABRP SOC
100% / 94%
6% / 14%

[Samuel-ABRP]

Ok so these values indicate they are more or less identical to ID models. I just changed the calculation of SoC to the same way as we do for the ID models, it might not be a perfect fit, but should be close enough now (like 1% difference max). Can you please check if the soc values in ABRP look more realistic now? Make sure your phone has internet access while connecting so it downloads the new OBD commands list. Once that is solved we can continue with checking the consumption values.

[Samuel-ABRP]

Actually i checked our values again and for current there were some sources that said it has to be divided by 10 and some where it says it has to be divided by 4, so i changed it to 4 now, as that is the same value for eGolf as well and seems to be more reasonable. So that could explain the way too low consumption as well. Please reset your consumption and try a few drives (or one longer) again and check if it looks more reasonable now.

Update:
In the meantime I also seem to have found something like a display SoC, but not sure, if it really works. So please send me a mail to samuel@iternio.com when you have some time, so we can try it together.

[Jodox]

I have an e-Golf an my SOC in ABRP is exactly 5 percent off compared to the instrument cluster in the car. When it shows 90 percent, ABRP shows 85 percent.

I have connecte the e-Golf via Tronity to geht over-the-air data (which in case of the e-Golf means only data at start and end of a trip) and also with the vLinker ODB-dongle to get live data while driving.

Edited June 28, 2022 by Jodox

[Moritz]

i dont have the problem with the offset !