🔋 Baseline for HV Battery SoH Performance (Battery Degradation Data by Taycan Owners)

[ciaranob]

1) Delivery SoH = 99.95% (Measured July 1, 2023)
2) Current SoH = 93.85% (Measured Jan 11, 2024)
3) Current mileage = 4,061
4) Home charging at 11kW and 2 short 10 min DC charging sessionss since last reading
5) Build date April 2023

PS:

Launch Control Count: Interesting that the app showed the count of Launches the car has had. I have been attempting these but only once the screen actually lit up with Launch control graphics and the other two times it did not but it did go quick off the line but I was not sure if it was really launched. The count showed a total of 3.

Emporia EVSE Users: This EVSE has been working flawlessly since I just use a Timer function set for 8am with 85% target and plug in say 8pm on the night before with no interaction with EVSE. However, today I had to take my wife to the airport and I had to plug in around 9pm and set departure to 4am, and the EVSE and car could not complete Initialization phase. This happened to me before but I was not sure why, now I know, this is because the time between plug in and departure may be too short to reach target. This has to do with some protocol that Taycan and EVSE use that EVSE gets confused stating the car is not accepting charge and goes through a reset cycle that goes nowhere. The solution is to keep the Timer on but before plug in, enable Direct Charge for the first 5 minutes that gets the charging going and then just turn off Direct Charge in the App, then everything proceeded smoothly.

Chart updated.

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[Dee]

Currently I'm performing a 4 day charging test @ 0 to -5°C.
From SoC 45-70% (today).
Next days: from ~50-70% (~50 km)
Hopefully my SoH will go up too.

Normally I charge from ~20/30 to 100% (10kW) and only charge when I'm at ~20/30%.
With this test I charge every day and store for 3-4 days at a low SoC, which is better according to the vid.
Of course I'll update this thread.

So that doesn't do anything, still 90% SoH.
Next test is to drive until the very minimum to "recalibrate" my SoH measurement.
I'll post when I have new data.
Fingers crossed.

PS I've updated to the pro-version of the Car Scanner app.

 

[ciaranob]

So that doesn't do anything, still 90% SoH.
Next test is to drive until the very minimum to "recalibrate" my SoH measurement.
I'll post when I have new data.
Fingers crossed.

PS I've updated to the pro-version of the Car Scanner app.

I’m on the Pro vers. too - not too surprised no change with this - do think Soc has to go below 10, possibly best results closer to 5% but I only did 10% and then charge back to full 100% - run back down to sub-50, maybe a lot lower and charge back to say 80% - SoH at start mid and end of cycle.

 

[ciaranob]

@rs38 - finally got round to purchasing the 'non-cloned' original manufacturer's OBDLink MX+ dongle - your points re Chinese clones well taken and now corrected ! Should receive it today and hopefully no issues working with CarScanner.

 

[tchavei]

Here comes my regular 2k km update.

KM: 15999
SoH: 90.42%

Temperatures have been quite cold (for south Portugal anyway) 11C-20C and lately I've stopped with my weekly "full recharge session" and rather charge "whenever".

Basically, I charge when I leave the car at work (3.2kW/h) for 4-5h, then sometimes when I go buy groceries (50kW/h) for 20 min and that means the car is always at 60%-85% during the entire week.

Don't think it makes things "better" or worse. I'm sure I can get a better SoH with a calibration charge.

Cheers.

 

[ciaranob]

Here comes my regular 2k km update.

KM: 15999
SoH: 90.42%

Temperatures have been quite cold (for south Portugal anyway) 11C-20C and lately I've stopped with my weekly "full recharge session" and rather charge "whenever".

Basically, I charge when I leave the car at work (3.2kW/h) for 4-5h, then sometimes when I go buy groceries (50kW/h) for 20 min and that means the car is always at 60%-85% during the entire week.

Don't think it makes things "better" or worse. I'm sure I can get a better SoH with a calibration charge.

Cheers.

Updated - steady as she goes!

 

[Scandinavian]

Hi, I think I can now get back on my graph after the battery repair? I had some really weird SoH readings while travelling to Norway and back. Range was great and all has worked fine in quite cold weather.

So things seem to have stabilised again and here are some new data

SoH. 89.54
KM. 62 128 km

This should be about 7k+ km after my last valid reading before the repair. And 95% on that distance since last report, has been on DC Ultra Fast charging
I still have to try a few of the BMS calibrations on AC, to see where I will end up.

Any use?

 

[ciaranob]

Hi, I think I can now get back on my graph after the battery repair? I had some really weird SoH readings while travelling to Norway and back. Range was great and all has worked fine in quite cold weather.

So things seem to have stabilised again and here are some new data

SoH. 89.54
KM. 62 128 km

This should be about 7k+ km after my last valid reading before the repair. And 95% on that distance since last report, has been on DC Ultra Fast charging
I still have to try a few of the BMS calibrations on AC, to see where I will end up.

Any use?

Absolutely - I think we can roughly determine as you suggest when the battery cell failure(s) initiated so by no means are all your prior data in error - quite the opposite. And even with a partial 'rebuild/refresh' your total mileage vs Soh still relevant.

Great to see that all appears to be corrected and functional.

EDIT: Chart updated

 

[trixxiee_CH]

I recently bought ELM327 OBD2 Mini and tried to use it with Car Scanner. I could get some data and see the SoH on the dashboard but couldn't get any details on cell voltage, the chart is empty. Do you guys have a pro version? Do you do your readings with "ignition" on?

 

[ciaranob]

I recently bought ELM327 OBD2 Mini and tried to use it with Car Scanner. I could get some data and see the SoH on the dashboard but couldn't get any details on cell voltage, the chart is empty. Do you guys have a pro version? Do you do your readings with "ignition" on?

My car is in an ‘on’ state as should yours to read data but whilst I have the Pro version of CarScanner (few dollars more), I don’t believe that is your problem as I’m near certain I looked at cell maps before upgrading the app.

You may need to double check compatibility of your reader on the CarScanner site as it still might be the problem.

 

[trixxiee_CH]

My car is in an ‘on’ state as should yours to read data but whilst I have the Pro version of CarScanner (few dollars more), I don’t believe that is your problem as I’m near certain I looked at cell maps before upgrading the app.

You may need to double check compatibility of your reader on the CarScanner site as it still might be the problem.

Thanks! Is there any other alternative software that would allow to see single cell voltage?

 

[Tooney]

My car is in an ‘on’ state as should yours to read data but whilst I have the Pro version of CarScanner (few dollars more), I don’t believe that is your problem as I’m near certain I looked at cell maps before upgrading the app.

You may need to double check compatibility of your reader on the CarScanner site as it still might be the problem.

I can see Taycan cell voltages on free version of carscanner.

 

[ciaranob]

Thanks! Is there any other alternative software that would allow to see single cell voltage?

There likely is (can’t recall right now) but TBH I’m not sure I’ve seen it to date but neither have I looked too hard as CarScanner hard to beat re an iOS platform that is regularly updated - others here may be aware.

One heads-up is that the OBDLink App associated with the very expensive top of the line OBD Link MX tool doesn’t even support electric cars!

 

[Tooney]

Maybe this will help: https://www.carscanner.info/choosing-obdii-adapter/

 

[trixxiee_CH]

My adapter (7 USD) looks exactly like one shown here as "bad adapters"...could be the reason lol ?

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