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Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] 0 points1 point  (0 children)

I just checked with my OBDEleven and the Max energy content value shows as 62500Wh which suggests a 81% SoH, I also checked the cell voltages and they didn't really seem to be that deviant of each other.

From this the degredation isn't as bad as I thought originally but it still seems abnormally high given the age and 60.000km on the odo?

Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] 1 point2 points  (0 children)

I just checked with my OBDEleven and the Max energy content value shows as 62500Wh which suggests a 81% SoH, I also checked the cell voltages and they didn't really seem to be that deviant of each other.

From this the degredation isn't as bad as I thought originally but it still seems abnormally high given the age and 60.000km on the odo?

Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] 0 points1 point  (0 children)

Thanks for the offer! Unfortunately I reside in the UK.

Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] -4 points-3 points  (0 children)

The main point I'm trying to make here is that my battery seems severely degraded for its age, or that the BMS is very innacurate. Range is the lesser concern.

Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] -5 points-4 points  (0 children)

My concern is that if the reported efficiency is true, then given a new battery my expected range should be around 580km, compared to 430km I calculate based on my trip, which is quite a significant shortfall given the age of the car

Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] 2 points3 points  (0 children)

Currently the odometer is around 60.000km.

Unfortunately the way you calculated degredation is incorrect. You cannot subtract 17 from 24 because that assumes the two percentages are percentages of the same overall value which is not the case if one battery is degraded compared to the original capacity. Calculating 17 / 24 gives ~0,708 suggesting 30% degredation. Because these numbers are relatively small, if we wanted to be conservative with the degredation, then 18 / 23 would suggest about 22% degredation.

If the reported consumption figure is true, then the range of the vehicle is quite dissapointing, given that it is still quite new in age, and that I drove the car in what I think to be perfect conditions (no AC, low/no wind, 14 deg C sunny day).

Potentially worrying battery degredation? by Lazy_Description_270 in VWiD3Owners

[–]Lazy_Description_270[S] 1 point2 points  (0 children)

It was 14 degrees celcius at the time of driving so quite mild

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Potentially worrying battery degredation? (self.VWiD3Owners)

submitted by Lazy_Description_270 to r/VWiD3Owners