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Post by born2023 on Sept 22, 2023 9:23:26 GMT
Hi everyone,
Can someone point me the reading menu where I can see some value that indicates battery degradation so far? I've seen around the internet some people talking about a value like "traction battery maximum capacity" at some point in time, and with that value we can calculate the degradation since new. In my case a 58kWh battery.
Is it possible to obtain some value like this using OBD11?
Thanks in advance.
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Post by whataboutthis on Sept 22, 2023 12:29:20 GMT
Sorry but I dont have an electric vehicle so cant check on mine.
If OBD11 has anything you should find it in Live data.
Maybe have a check under Control Unit 8C Battery Energy Module or C6 Battery Charger to see if there is anything that can help.
If you find the answer please share.
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Post by born2023 on Sept 22, 2023 14:49:08 GMT
Ok, thank you. I'll check it and if I find it I'll share it with you guys.
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Post by born2023 on Sept 25, 2023 9:14:52 GMT
Hi
I think I may have found one value that can help in this question.
I'm not 100% sure about this but you can go to:
Control units -> Gateway -> Live Data -> filter by "HV-EM operation data"
In there you will find a value under "HV-EM high voltage battery energy information"
Example: 32700 Wh
I think this is energy that the battery have left at this particularly moment.
Then, you can go to:
Control units -> Battery Energy Module -> Live Data -> filter by "Battery charge condition"
This will show you the actual SOC of the battery at this moment (more accurate than the drivers display).
Example: 60.000%
Finally, you can do the math:
32.7 kWh / 0.60 = 54.5 kWh
Which means a degradation of 54.5/58 = 0.94 ~ around 6%
OR
And I think this will be more accurate, make a full charge to 100% and take the reading of "HV-EM high voltage battery energy information" immediately after. This will save you part of the math, and again, I think it will be more accurate.
Again, I'm not 100% sure about this, but it was the best I could find.
Regards
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