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

[Scandinavian]

I do have concerns that our SOH readings are not completely accurate. You show no degradation whatsoever from 16,000 to 32,000. It's difficult to believe that a characteristic battery will show 10% degradation (assuming 100% at start) in the first 16,000 miles, and no degradation in the following 16,000 miles.

I guess we are reading the SoH that is stored somewhere in the cars ECU? And as discussed in other threads it might be quite difficult to get a good reading Of the SoH from Lithium batteries??

All I can say is that the OBD apps we use all seem to be indicating this as a normal development. Ie the SoH will drop quite rapidly in the beginning and then stabilise at around 90% for some time. I have had two modules replaced and just recently started to use eFlow app. In the app they are saying that they compare my SoH to other comparable cars that use their app. Here Is a screenshot form the app.

So All really depends on what is stored in memory in the car?

 

[freeforall]

@ciaranob
Here is an update for my car
2/ 98.679%
3/ 23000 km
4/ 600 kw of DC charging

Thanks!

 

[ron_b]

I just checked my state of health today after a short trip and my battery was at 59% state of charge after a long trip yesterday and two DCFC sessions yesterday. Great news…


1) Delivery Soh - unknown
2) Current SoH 92.46 as reported by Car Scanner
3) Current mileage 85,704 mi 138,000 km (also I want to apologize for the miss-quote of mileage on my February 7 posting, I went back to my Google Docs history and verified that it was actually 81,600 miles as you can actually see in the image below the posting.)
4) kWh DC charging 20,189
kWh L2 11,912
5) Build date Aug 2020
1/3 of a penny/mile seems efficient, until you factor in the 4 sets of tires.
But what I am truly pleased with is 7.5% drop in SoH with nearly 86k miles.

I just checked my state of health today after a short trip and my battery was at 59% state of charge after a long trip yesterday and two DCFC sessions yesterday. Great news…


1) Delivery Soh - unknown
2) Current SoH 89.54 as reported by Car Scanner Pro
3) Current mileage 99,331 mi 145,460 km
4) kWh DC charging 20,866kWh L2 12,891
5) Build date Aug 2020
1/3 of a penny/mile seems efficient, until you factor in the 4 sets of tires.
But what I am truly pleased with is 10.46% drop in SoH with over 90k miles.

 

[tchavei]

I just checked my state of health today after a short trip and my battery was at 59% state of charge after a long trip yesterday and two DCFC sessions yesterday. Great news…


1) Delivery Soh - unknown
2) Current SoH 89.54 as reported by Car Scanner Pro
3) Current mileage 99,331 mi 145,460 km
4) kWh DC charging 20,866kWh L2 12,891
5) Build date Aug 2020
1/3 of a penny/mile seems efficient, until you factor in the 4 sets of tires.
But what I am truly pleased with is 10.46% drop in SoH with over 90k miles.

That's insane. Congrats. Wow

Enjoy!

 

[Gru]

update at 43k mi: SoH: 90.4

It was 88.9, did one rebalancing and it went to 90.3.
did a second rebalancing and it 's now at 90.4

update at 56k km / 35k mi: SoH : 91.2

 

[bn8959]

Mine is now exactly 1 year old and is 30 miles off 10k miles.
SoH showing 91.6%
Probably around 15 DCFC sessions (typically adding no more than 30% SoC each time). Rest 7.2kW home charging (with a couple of 22kW sessions and a dozen or so evenings on a granny charger).

 

[rs38]

Here is an update for my car
2/ 91.1%
3/ 44000 km
4/ at least 50% DC charging
5/ built Dec. 2020

was below 90% last 12 month I think

 

[tchavei]

Update

SoH: 88.65%
Km: 34000

Totally chaotic charging pattern (mostly in the 50-150kW range with some AC 3.2kW mixed in)

 

[tchavei]

Update

36000 km
SoH: 89.79%

New set of tires.

Funny that SoH climbed once I started to do longer stretches and charging at 260kW ?

If someone wants to play or generate similar graphs: https://github.com/tchavei/batteryhealth

Cheers

Tony

 

[JaseH84]

Had the car for 2 weeks. Summer 2021 build 4S CT

SoH: 86.23%
55,000 miles

 

[Taycan4S_UK]

Hi folks, where is the option in the carscanner app to check battery health?

I had it connected to the car but couldn’t figure out which option I needed

 

[SergeyIndy]

Hi folks, where is the option in the carscanner app to check battery health?

I had it connected to the car but couldn’t figure out which option I needed

I know this could be confusing.

First be sure to select correct Connection Profile = Porsche eTron, eTron GT, Taycan from Settings.
Then, Connect to be sure both ELM and ECU connections are established.
Then, you go to Dashboard and scroll through screens until you see SoH values as shown in the post just above yours.

 

[Taycan4S_UK]

I did check the dashboard but didn’t scroll.

Regarding the 8-year Porsche battery warranty, what does it cover? At what state of health (SOH) does it qualify for a replacement?

 

[SergeyIndy]

I did check the dashboard but didn’t scroll.

Regarding the 8-year Porsche battery warranty, what does it cover? At what state of health (SOH) does it qualify for a replacement?

This has been discussed before at length, but happy to help with the warranty terms, at least for the US. The coverage includes excess loss of capacity at years and miles. That is why we have this thread, in part, to measure SoH to catch any sudden loss of capacity or detect any outlier battery cells.

 

[Taycan4S_UK]

Thank you. I will check tomorrow