SoH

[RTH]

On the Taycan, when the SoH says 85%, is that 85% of the usable capacity after buffering on the 93.4kWh or actual 85% of the full 93.4kWh capacity?

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[SergeyIndy]

We have the entire thread on it that explains it, but I am happy to simplify but please do study the first post of this thread below. We believe that usable capacity of the battery at 100% SoH when brand new is 86.7kWh for the PB+ listed at 93.4kWh total capacity. Therefore, if your SoH is 85% then you would multiply that value by 85% and you can verify that easily if you have the OBD that would also report Battery Energy and Display SoC as a check sum. I am not going to go into more details at this point until you study the thread.


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

 

[Gkwan]

Interesting @SergeyIndy thanks, is there a statistics as to how much % of the kwh injected in the battery are "lost" to conversion/efficiency or whatever ?
Just curious because I calculated (just twice) how many points of battery I gained after DC charging & compared it to my invoice : e.g. they invoiced me 72,3kwh which made me gain 84 points of battery, ie simple math would say 100% of my battery consumed 86kwh from the charging station.
Whereas Porsche's SoH reading (basic as we discussed) says 91%.
So I'm guessing there is a loss factor between the DC plug & what's really stored/usable by the battery.
Purely rhethoretical question

 

[SergeyIndy]

Interesting @SergeyIndy thanks, is there a statistics as to how much % of the kwh injected in the battery are "lost" to conversion/efficiency or whatever ?
Just curious because I calculated (just twice) how many points of battery I gained after DC charging & compared it to my invoice : e.g. they invoiced me 72,3kwh which made me gain 84 points of battery, ie simple math would say 100% of my battery consumed 86kwh from the charging station.
Whereas Porsche's SoH reading (basic as we discussed) says 91%.
So I'm guessing there is a loss factor between the DC plug & what's really stored/usable by the battery.
Purely rhethoretical question

There are definitely losses, but I have not seen this topic discussed on the forum. I would be interested to see out of curiosity as this is a valid point of interest and it may vary depending on speed and provider.

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