Only getting 200 mile range on a charge

[SergeyIndy]

Are you getting the OBD to check things out @Dave T?
The issue is not how many miles of range others get, but rather steep drop in estimated range, for you.

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[Dave T]

Are you getting the OBD to check things out @Dave T?
The issue is not how many miles of range others get, but rather steep drop in estimated range, for you.

Yes, I ordered it from amazon, it should be arriving today. I will post the results here! Thanks again.

 

[Schlossj]

Ok. So your car is as old as mine. Seems like you're seeing the same problem. How many miles do you have? Are you actually charging to 100%, or just calculating full charge range based on the % charge you did? I know fully charging the battery is bad for it, unless you drive right away. I never charge past 80% unless I'm immediately leaving for a long trip, which I've done only 2-3 times since I've owned the car.

I charge to 100% often but then drive the car long distance immediately. I have almost 30K miles. Summer time AT BEST I can get 250 miles. I think it's just the way of the world...and I'm just used to it. Almost drove me to buy the 2025...but I'm done with the MASSIVE depreciation on Taycan's...

 

[Dave T]

Please get this one: https://www.amazon.com/gp/product/B088LW211V/
You can PM me and I can help you with step by step if you would like.
Then you only need free CarScanner app, choose eTron/Taycan Profile.
You can capture all the data points from Dashboard and share.
We can interpret them for you.

This is the thread that is focused on OBD and data capture:

https://www.taycanforum.com/forum/threads/?-baseline-for-hv-battery-soh-performance-battery-degradation-data-by-taycan-owners.12815/

Ok, I ran CarScanner with the OBD module. I got screen captures of all 25 screens and ran the diagnostic check. Which info should I post here?

 

[SergeyIndy]

Ok, I ran CarScanner with the OBD module. I got screen captures of all 25 screens and ran the diagnostic check. Which info should I post here?

The ones I need should have the following data points and graphs:

From Dashboard

Screens with data points: SoH%, Battery Energy kWh, SoC Display %
Graphs Yellow Bar: Cell Voltage, Cell SoC, Cell Temp.

From Car or App:

Current Miles
Consumption recent history ideally in kWh/100miles

After we do this, recommend a rebalance and read out again. I can help with step by step.

 

[Dave T]

The ones I need should have the following data points and graphs:

From Dashboard

Screens with data pointsi: SoH%, Battery Energy kWh, SoC Display %
Graphs Yellow Bar: Cell Voltage, Cell SoC, Cell Temp.

From Car or App:

Current Miles
Consumption recent history ideally in kWh/100miles

Current miles is 26633.

The average consumption from the "trip" screen in the PCM is 27.6 kWh/100 mi (27 mph average speed).

Here are the screens. Let me know if you need anything else. Thanks again!

 

[Grim]

207 miles. He has the high capacity battery. And that’s at the low end of what he says he gets. 23kwh would be 252 miles.

It’s 186 … usable capacity of the high capacity battery is 84kwh … so exactly 300km or 186 miles

As I said … everyone has a different view of spirited or fun driving and 23kwh per 100 would be 226 miles

State of health above at 84pct seems about right for a 4/5 year old car and within Porsche parameters (warranty is 80pct within 3 years / 37500 miles, whichever occurs first).

Mileage will also be impacted by temp this time of year. Winter tyres also have higher rolling resistance.

 

[Dave T]

It’s 186 … usable capacity of the high capacity battery is 84kwh … so exactly 300km or 186 miles

As I said … everyone has a different view of spirited or fun driving and 23kwh per 100 would be 226 miles

Ok, that's news to me. I was going by 93kwh being a full charge. So that's incorrect?

 

[SergeyIndy]

86.70kWh - Battery usable energy when new at 100% SoH (a known basis variable)

These calculations are intended to cross check SoH and calculate usable Battery Energy:
43.65kWh current battery energy / 59.94% SoC Display = 72.82kWh usable battery energy
72.82kWh usable battery energy / 86.70kWh =83.99% calculated SoH vs. 84.07% reported

84.07% SoH is low in my opinion for a car with 27k miles but not drastically so since it is 4+ years old and a key contributing factor on range.

72.82kWh is usable battery energy after degradation meaning that for you to have 200-mile range, the consumption should be averaging 36kWh/100miles when you are driving for at least an hour to let it stabilize.

Cell Graphs all look normal with no cell outliers that would indicate cells going bad.

The next thing to do is rebalance expecting to gain SoH at least 2% if you have not done it before.

Rebalancing Protocol:

Run down SoC to 2%.
Leave the car locked and undisturbed (key far away, no app access) for 6.5 hours min (overnight)
Recharge at slower than usual rate at home on AC 40Amp/9.6kW or lower to 100%
Leave the car locked and undisturbed (key far away, no app access) for 6.5 hours min (overnight)
Recapture all parameters above including Cell graphs

After the Rebalance:
Bad cells may come forward
SoH should increase by at least 2% from current 84% to 86% resulting in more range

 

[SergeyIndy]

Ok, that's news to me. I was going by 93kwh being a full charge. So that's incorrect?

Not correct. I have exact data.
93.4kWh is gross published spec
83.7kWh is net published spec
86.7kWh is actual at 100% SoH we know from data (Porsche always underestimates its published values)
72.82kWh is what your car actually has to use after degradation at 84% SoH

See my full analysis above. 100% accurate.

 

[Dave T]

86.70kWh - Battery usable energy when new at 100% SoH (a known basis variable)

These calculations are intended to cross check SoH and calculate usable Battery Energy:
43.65kWh current battery energy / 59.94% SoC Display = 72.82kWh usable battery energy
72.82kWh usable battery energy / 86.70kWh =83.99% calculated SoH vs. 84.07% reported

84.07% SoH is low in my opinion for a car with 27k miles but not drastically so since it is 4+ years old and a key contributing factor on range.

72.82kWh is usable battery energy after degradation meaning that for you to have 200-mile range, the consumption should be in a 36kWh/100miles when you are driving for at least an hour to let it stabilize.

Cell Graphs all look normal with no cell outliers that would indicate cells going bad.

The next thing to do is rebalance expecting to gain SoH at least 2% if you have not done it before.

Rebalancing Protocol:

Run down SoC to 2%.
Leave the car locked and undisturbed (key far away, no app access) for 6.5 hours min (overnight)
Recharge at slower than usual rate at home on AC 40Amp/9.6kW or lower to 100%
Leave the car locked and undisturbed (key far away, no app access) for 6.5 hours min (overnight)
Recapture all parameters above including Cell graphs

After the Rebalance:
Bad cells may come forward
SoH should increase by at least 2% from current 84% to 86% resulting in more range

Thanks! So the age of the car is an important factor in the cause of battery degradation? I would have thought it was dependent on mileage driven, or perhaps number of charging cycles, but I didn't know the age mattered all that much.

I will try the rebalancing at some point, but I'm not going to rush to do it if it would only gain me 2%, and I coudn't use the car for a day. Plus charging to 100% without using the car makes me nervous!

The thing I don't understand is what you said about how I'd need to be running at 36kwh/100 miles to get 200 mile range. That's crazy high, isn't it? As I said, it's currently showing 27.6 kwh/100. I don't pay attention to that, but I wouldn't have thought I was burning that much juice when I drive.

 

[Grim]

27.6kwh / 100 miles doesn’t sound right - way too little power usage in my opinion - it would be equivalent to over 300 miles on average or 3.6 miles per kWh

In both my Taycans I was getting around 2.5 miles on average. Current Taycan CT 4S is showing 2.4 at 26mph over last 6000 miles.

 

[Grim]

Another reason for lower efficiency could be if you only make short trips on a daily basis as the car uses mechanical brakes the first few times you brake before regen kicks in.

It’s not unusual for me to see figures in the 50kwh/100miles on the trip computer for the first 5 miles of a trip especially if the cabin needs heating to temp in addition to regen not yet kicking in.

 

[SergeyIndy]

Thanks! So the age of the car is an important factor in the cause of battery degradation? I would have thought it was dependent on mileage driven, or perhaps number of charging cycles, but I didn't know the age mattered all that much.

I will try the rebalancing at some point, but I'm not going to rush to do it if it would only gain me 2%, and I coudn't use the car for a day. Plus charging to 100% without using the car makes me nervous!

The thing I don't understand is what you said about how I'd need to be running at 36kwh/100 miles to get 200 mile range. That's crazy high, isn't it? As I said, it's currently showing 27.6 kwh/100. I don't pay attention to that, but I wouldn't have thought I was burning that much juice when I drive.

I am just going by the data that the car is reporting.

I do not know if age is a factor or not but your SoH at the age and mileage looks on the low side.
Rebalancing will not hurt anything as this is per official Porsche TSB.
Rebalancing benefit is to see if any bad cells come forward as preemptive move.
100% for overnight should not be a big deal, but that allows the battery to rebalance properly resulting more accurate reporting of the data.

The data shows that you only have rounding down 72kWh for the car to use at 100% SoC.

I agree with others that your 27kWh/100miles does not make a lot of sense as it is way too efficient, but I do not know your ambient conditions. The best I am getting is around 38kWh/100 miles on an hour local city drive in near 32F weather.

 

[KLHubb]

This is the best guessometer mileage I have gotten in summer months.
I am seeing 260 mile range this very cold winter in Upstate NY

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