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Discussion Starter · #1 ·
Hi all! I am a happy e-Niro user. After 33.000 km and year and a half, I checked the actual SoC after charging to 100% using OBD. There it said 95.5%, so it seems I have a 0.50% of degradation as I've been told battery buffer is 5% of total.

What's yours?
 

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Hi all! I am a happy e-Niro user. After 33.000 km and year and a half, I checked the actual SoC after charging to 100% using OBD. There it said 95.5%, so it seems I have a 0.50% of degradation as I've been told battery buffer is 5% of total.

What's yours?
This percentage of total capacity at 100% SoC varies in my experience. I don't know that you can deduce very much from it. Mine was 94.5% at the end of January. Back at the end of October it was 96%. The 100% charge seems to stop at different voltages, too. Maybe temperature-dependent? There's also an SOH readout, but I believe everybody's reads 100%, i.e. not valid data.
 

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Discussion Starter · #3 ·
This percentage of total capacity at 100% SoC varies in my experience. I don't know that you can deduce very much from it. Mine was 94.5% at the end of January. Back at the end of October it was 96%. The 100% charge seems to stop at different voltages, too. Maybe temperature-dependent? There's also an SOH readout, but I believe everybody's reads 100%, i.e. not valid data.
I would agree with you if that number goes up and down, but in your case is increasing (which "would" be consistent as a degradation). If anyone else is seeing this number increasing and decreasing I would love to know.

Didn't check about the voltage variation at 100%, probably related with temperature as you said, will do, thanks for the hint!
 

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There is no standard for calculating battery degradation and the way they do it is a trade secret, so it's very hard to know what these numbers mean.

It might help if someone with a brand new eNiro could check if they actually have 100% or something less. Long ago I used to fit lead acid batteries and customers would complain that the "new" ones where not showing 100% capacity. They were not supposed to see the true capacity, it was in an engineering menu and set 100% to be the ideal that few batteries ever reached. I think in the end they just made it so that the top level was 110% because the customers wouldn't complain that they were getting some extra life for free.
 

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Discussion Starter · #5 ·
There is no standard for calculating battery degradation and the way they do it is a trade secret, so it's very hard to know what these numbers mean.

It might help if someone with a brand new eNiro could check if they actually have 100% or something less. Long ago I used to fit lead acid batteries and customers would complain that the "new" ones where not showing 100% capacity. They were not supposed to see the true capacity, it was in an engineering menu and set 100% to be the ideal that few batteries ever reached. I think in the end they just made it so that the top level was 110% because the customers wouldn't complain that they were getting some extra life for free.
In this case I've used OBD and Soul EV Spy, which shows both "display SoC" and "actual SoC", so definitely not display data but "real" data, and I found that actual SoC is usually around 95% so it is consistent with the 5% buffer (total around 67.2 kwh).
 

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Discussion Starter · #6 ·
Hi all! I am a happy e-Niro user. After 33.000 km and year and a half, I checked the actual SoC after charging to 100% using OBD. There it said 95.5%, so it seems I have a 0.50% of degradation as I've been told battery buffer is 5% of total.

What's yours?
After 54000 kms and 26 months, I've seen 100% display SoC and actual Soc in 96%. That means I have now 1% degradation after more than 2 years taking care of the battery (mainly AC charging, and usually until 60% only on daily basis).
 

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As I've said before on this thread, you can't deduce anything meaningful from the actual SoC figure at 100% charge. Mine has fluctuated between 94.5 and 96.5 through 2019, 2020 and this year, with no trend in one direction. I'm currently at 17,000 miles (not a lot in 2020!). Nor does the maximum battery voltage reached consistently match a particular actual SoC figure, e.g. 406V and and 407V at 96.5%. Yes, the top buffer appears to be around 5% (of the usable battery capacity of 180Ah) i.e. another 9Ah-ish and this will be at an average of around 409V, i.e. another 3.68kWh, so nearer 6% in energy terms.
 

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Discussion Starter · #8 ·
As I've said before on this thread, you can't deduce anything meaningful from the actual SoC figure at 100% charge. Mine has fluctuated between 94.5 and 96.5 through 2019, 2020 and this year, with no trend in one direction. I'm currently at 17,000 miles (not a lot in 2020!). Nor does the maximum battery voltage reached consistently match a particular actual SoC figure, e.g. 406V and and 407V at 96.5%. Yes, the top buffer appears to be around 5% (of the usable battery capacity of 180Ah) i.e. another 9Ah-ish and this will be at an average of around 409V, i.e. another 3.68kWh, so nearer 6% in energy terms.
It's consistent under the same conditions. It's true that during summer, actual SoC was higher, but when cold weather returned (like these weeks), then it is again consistent with the measures I've taken 8 months ago, degrading another 0.5%.

But we will see the coming months if that still proves right or wrong.
 
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