Baseline for HV Battery SoH Performance

[ciaranob]

1) unknown
2) 90.17%
3) 53k km
4) unknown until 32k km. Only 3 times since that time. All the rest is 2.2 kWh home charging
5) MY2021

I have also reading at about 49k that I did last October. SOH was 87.88% back then. I did not do any recalibrations before. Except that I discharged the car to about 5% a couple of times since I got it at 32k km.

I did a recalibration today and let the car to sit at 15% overnight. Let’s see what it’ll report after some time

Will add later today but can you tell me which climate zone you are in to place you correctly (maps in post 1) - thx!

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[rim23]

Will add later today but can you tell me which climate zone you are in to place you correctly (maps in post 1) - thx!

Cold zone (Finland).

 

[Scandinavian]

A interim update on my SoH after one recommended cycle of discharge , charge

63 257 km. (not so much since last update)
89.95% SoH
78% DC super fast charging.

With the help of downloaded info from MyPorsche, I have been able to see the days we travelled with car and charged on DC. And always on DC> 150 kW, Ionity, Fastned, Tesla etc.. Home charging on 11 kW AC plus some free hotel charging etc.

I have over the lifetime of the car used DC charging 78% of the time. 11,184 kWh DC and 3,172 kWh AC. So quite a lot of DC charging and sometimes with the battery saving feature enabled, depending on urgency for a charge.

 

[freeforall]

My turn to provide some numbers. I finally purchased a vLinker Dongle and the results are a very good surprise for me:
1) Unknown
2) 99.44%
3) 13940 km (8662 miles)
4) 311 kw of DC Charging
5) Built Oct 2022 (ST MY23) / Delivery December 2022
I am in Paris (Cool weather)

Some additional information:
- All my DC charging have been done with peaks at 264 kwh (did not limit it in the PCM)
- During weekdays, I charge with a profile at 40% or 50% since I only do small trips.
- On the week-ends I set a timer to 60% or 70% for Saturday and Sunday mornings
- When I have a long trip, I set a timer for the battery to be charged at 100% by the departure time, so it never stays a long time at 100%

=> this seems to lead to a good battery SoH overtime (I have been driving the car for 14 months now)

 

[ciaranob]

Will catch up to these latest additions (last 3 at least) in the AM tomorrow ...

 

[ciaranob]

My turn to provide some numbers. I finally purchased a vLinker Dongle and the results are a very a good surprise for me:
1) Unknown
2) 99.44%
3) 13940 km (8662 miles)
4) 311 kw of DC Charging
5) Built Oct 2022 (ST MY23) / Delivery December 2022
I am in Paris (Cool weather)

Some additional information:
- All my DC charging have been done with peaks at 264 kwh (did not limit it in the PCM)
- During weekdays, I charge with a profile at 40% or 50% since I only do small trips.
- On the week-ends I set a timer to 60% or 70% for Saturday and Sunday mornings
- When I have a long trip, I set a timer for the battery to be charged at 100% by the departure time, so it never stays a long time at 100%

=> this seems to lead to a good battery SoH overtime (I have been driving the car for 14 months now)

Insanely good Soh! - I have about 1000 more miles but down at 88-89% Soh. One of the very few cars that has retained such a high Soh - interesting.

 

[Aellseian]

Absolutely - will be marked and tracked - I’ll also be playing more with cell temps

Update to my situation:
After watching Jeff Dahn’s presentation, I went from charging to 80% and keeping state of charge between 80-30%, only charging 1 or 2 times a week, to now: Charging to 70%, and charging every day, and keeping charge between 50-70% as much as I can. Only AC charging, 7.2kw.
I just checked my SoH, and it is still 86.22. So in 3 weeks of daily driving the SoH has not gone down even 0.01%!
From 19 Jan to 2. Feb SoH went from 86.86 to 86.22, so -0.64% in only 2 weeks! And now it is completely stopped degrading.
Really goes to show you should really plug the car in every day and limit to max 70% SOC if you can for daily driving.

 

[ivan37tay]

Thanks for tracking this. Here is my recently-acquired GTS status:

1) Delivery Soh - unknown
2) Current SoH - 94.36%
3) Current mileage - 7500 mi
4) kWh DC charging - unknown
5) Build date - Jan 2022
Cold climate

Update after about a year:

1) unknown
2) Current SOH: 91.95%
3) 21,300 miles
4) In past 4 months: 362.84 kwh on DC (hadn't been tracking before, starting to now)
5) Build date - Jan 2022, GTS

* Correction: I'm in "cool" climate - originally listed as "cold"

 

[ciaranob]

Update after about a year:

1) unknown
2) Current SOH: 91.95%
3) 21,300 miles
4) In past 4 months: 362.84 kwh on DC (hadn't been tracking before, starting to now)
5) Build date - Jan 2022, GTS

* Correction: I'm in "cool" climate - originally listed as "cold"

Excellent, thx - will add asap.

 

[haltun]

this is my update

Taycan 4s performance
Hot climate

2)current SOH : 84%
3) 51300 km
4) mostly AC 11kw
5) february 2021

 

[Hatten]

1) n/a
2) 92.2
3) 8940km
4) ~15times total
5) March 2023

 

[ciaranob]

Very busy today but will get to adding all above asap! Thx all.

 

[ciaranob]

@ivan37tay @Hatten @haltun - main chart in Post #1 updated with your latest inputs.

@haltun - that is the lowest Soh of all 84 cars to date - are you really at 84%?! Might be worth trying a balancing routine to see what kind of 'recovery' you might get.

 

[haltun]

@ivan37tay @Hatten @haltun - main chart in Post #1 updated with your latest inputs.

@haltun - that is the lowest Soh of all 84 cars to date - are you really at 84%?! Might be worth trying a balancing routine to see what kind of 'recovery' you might get.

I learned this value from Porsche service after left the car for PCM update. This values 87% one year ago. What is balancing routine? I don't have any information about it.

 

[ciaranob]

I learned this value from Porsche service after left the car for PCM update. This values 87% one year ago. What is balancing routine? I don't have any information about it.

Discussed here and elsewhere in the forum but basically a simplistic way to ‘balance’ the cells in your HV battery pack to maximize charge potential - it usually results in a 1-2 % ‘bump’ in SoH but in effect is just giving a slightly more accurate estimation of your active SoH.

Typically you’d charge to 100% (try not to leave it too long in thus state) drive down to sub-20% (preferably closer to sub-10%), re-charge to ca 80% or higher and again bring it down to sub-50% - take an SoH reading before, during and after to determine if and magnitude of change.

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