Did I get a bad car?

[faithnomore]

Hi,

I have taycan ST 4S with big battery since july this year. Range has always been pretty poor - but I assumed it was my driving style and the higher highway speeds when compard to the US, however, I just discovered my old bluetooth IBD scanner works on this car and I saw some things that raise some questions:


1) SoH: is at 91,69%, the car has 13000km, is 6 months old and I have treated the battery PERFECT - I can't imagine it declining this fast?
2) at the time of measuring, battery was charged to 80%, yet the battery energy is marked at 62.9 - did they sell me the wrong car? Because that would mean my battery at a 100% has a capacity of 78 - so the small battery instead of the big one ?

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[Scandinavian]

Hi,

I have taycan ST 4S with big battery since july this year. Range has always been pretty poor - but I assumed it was my driving style and the higher highway speeds when compard to the US, however, I just discovered my old bluetooth IBD scanner works on this car and I saw some things that raise some questions:


1) SoH: is at 91,69%, the car has 13000km, is 6 months old and I have treated the battery PERFECT - I can't imagine it declining this fast?
2) at the time of measuring, battery was charged to 80%, yet the battery energy is marked at 62.9 - did they sell me the wrong car? Because that would mean my battery at a 100% has a capacity of 78 - so the small battery instead of the big one ?

Your battery is fine. It is quite normal that you see a SoH after 13 k km at around 90%.

There is a good thread about it here:

https://www.taycanforum.com/forum/threads/baseline-for-hv-battery-soh-performance.12815/

 

[faithnomore]

Thank you, but if I read that correctly I see I should have much more kwh capacity and a SoH above 98 no? car is only 6 months old.

 

[f1eng]

Thank you, but if I read that correctly I see I should have much more kwh capacity and a SoH above 98 no? car is only 6 months old.

I am no expert but I have the impression that charge/discharge cycles, particularly if high speed DC charging is used, are more indicative than age of battery life.

 

[Scandinavian]

There is quite a spread of SoH % in the graph. Do some readings and send in your data in the thread, so others can comment? I have about 90 % SoH now after 65000 km and it fell quite rapidly to about 90%. But it stayed fairly constant at that level since?

Send in your data and let @ciaranob comment

 

[faithnomore]

There is quite a spread of SoH % in the graph. Do some readings and send in your data in the thread, so others can comment? I have about 90 % SoH now after 65000 km and it fell quite rapidly to about 90%. But it stayed fairly constant at that level since?

Send in your data and let @ciaranob comment

I'll try to do that, but what about the 62.9kwh at 80%?

 

[faithnomore]

I am no expert but I have the impression that charge/discharge cycles, particularly if high speed DC charging is used, are more indicative than age of battery life.

I used dc charging only 3 times until now?

 

[Scandinavian]

I'll try to do that, but what about the 62.9kwh at 80%?

If we can trust the tool to show the correct kWh in the battery, you should have 78.6 kWh at 100%.

Remember that the Usable battery capacity according to Porsche is 83.7 kWh. That would show you have 94% capacity left.

The gross battery capacity is 93.x% but it is not all unlocked for us to use.

So I still think You are fine.

 

[Hirschaj]

Range has always been pretty poor

What are your actual range numbers?

 

[faithnomore]

What are your actual range numbers?

I never really "empty" the battery, but at 80%, the indicated range is now around 245km - in the summer this was 295km and that seems to mostly match reality if I don't go in hooligan mode to much. Even on 'eco-run' I do drive between 130km/h and 140km/h with short bursts to 160km/h

Current kwh/100km is around 30, I know in summer I can drop to 23, but that's no fun then it's staying under 130 in range mode mostly.

Also note -currently on 20" winters, in summer on 21"s

 

[Hirschaj]

I never really "empty" the battery, but at 80%, the indicated range is now around 245km - in the summer this was 295km and that seems to mostly match reality if I don't go in hooligan mode to much. Even on 'eco-run' I do drive between 130km/h and 140km/h with short bursts to 160km/h

Current kwh/100km is around 30, I know in summer I can drop to 23, but that's no fun then it's staying under 130 in range mode mostly.

Also note -currently on 20" winters, in summer on 21"s

Your range is similar to mine and many others on here. Sounds like your car is completely fine and you’re driving it the way it should be driven.

 

[faithnomore]

Your range is similar to mine and many others on here. Sounds like your car is completely fine and you’re driving it the way it should be driven.

Thanks for your feedback - I'm still mostly puzzled about the kwh this app gives me - but I don't even know if the app is correct.

Just to be sure - you have a comparable range - this is also with the performance battery plus?

 

[Jasper4S]

My range is exactly the same. I have the 4s with extended battery and 21”. Nothing to worry about, but I feel you, it still sucks that we don’t get the range we expected (almost 500 in summer). But it is a Porsche. So range was not in my top 10 prio list

 

[faithnomore]

My range is exactly the same. I have the 4s with extended battery and 21”. Nothing to worry about, but I feel you, it still sucks that we don’t get the range we expected (almost 500 in summer). But it is a Porsche. So range was not in my top 10 prio list

Oh - I’m not to bothered with factual range - but because i don’t understand these things fully and I’m a bit distrusting ( haven’t had the best dealer experience) my mind goes into direction of - did I get the right battery

 

[ciaranob]

@faithnomore @Scandinavian, apologies - late to this post.

For ref my car was at 92+% Soh after only 8 months - quite a few other cars had similar 'precipitous' initial drops in Soh.

The Battery Energy number you are referencing I assume from the CarScanner app using your OBDII tool?

For ref again the 93.4 kWh Battery Plus has a usable (Porsche published) 83.7 kWh - however as discussed in the BaseLine Soh thread it is considered to be more likely 86.7 KwH actual usable.

Your OBDII flash Soh readout is the % of this usable energy.

So from your metrics:

Your Soh is 91.7% - that is 91.7% of Porsche published 83.7 kWh = 76.8 kWh usable battery energy

Your SoC at time of Battery Energy readout was 80%

80% of 76.8 = 61.4 usable energy remaining - very close to what the App is reporting as BE.

If I instead use the more likely 86.7 initial usable:

86.7%*0.917 = 79.5 kWh usable battery in your car
80% of 79.5 = 63.6 kWh at time of measurement.

Your app was reporting 62.9 usable at 80% which to me is well within error range.

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