mkhuffman

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Mache_Nor

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The sheets seems to be corrupted somehow, as there are no visual charts anymore on the link.
 
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The sheets seems to be corrupted somehow, as there are no visual charts anymore on the link.
thanks you're right but it seems to be an issue on the google side (i tried re-publishing and it's still broken)

will see if it fixes by end of day, otherwise will look for an alternative
 


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flapjake314

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still not working, i tried a bunch of things on my side (copy and pasting the data to another sheet, remaking the graphs, republishing the page etc) all still doesn't show

to be clear on the actual sheets where i can edit the data and make the graphs it's fine, it just doesn't show when i publish it to be shared with you guys. you can still see the data itself, it's just the graphs that seem to be an issue
 

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Entered mine today. SOH is 100% at 3150 miles from OBD reading. How/when does the SOH get updated, do you need to run down to ~10% then charge to 100%?

George
 
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flapjake314

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Entered mine today. SOH is 100% at 3150 miles from OBD reading. How/when does the SOH get updated, do you need to run down to ~10% then charge to 100%?

George
i'm not sure what updated means, i think it is constantly updated. there are rumors / guesses on how to recalibrate it (indeed by using some version of the process you're saying)
 

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i'm not sure what updated means, i think it is constantly updated. there are rumors / guesses on how to recalibrate it (indeed by using some version of the process you're saying)
The SOH value only updates when there is a large enough charging delta (e.g. at least 30% charge added). If you only charge from 75% to 80% it might never update. That’s why doing a periodic battery calibration is best with a very large charging delta.
 

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Suggestion: List the sample size somewhere (preferable a number right or left for the R-number). This is likely very interesting for future references as the tables grow.
 
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flapjake314

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Suggestion: List the sample size somewhere (preferable a number right or left for the R-number). This is likely very interesting for future references as the tables grow.
do you know how to add that in google sheets' charts? otherwise, i don't either

but also i think the problem is on my side i can see the row count on the second tab but on your side you can't haha. it's just over 100 right now btw
 

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do you know how to add that in google sheets' charts? otherwise, i don't either

but also i think the problem is on my side i can see the row count on the second tab but on your side you can't haha. it's just over 100 right now btw
Hmm, I guess it should be possible to autosum / summarize a column in one part of the sheet and then paste the value in a other part of the sheet? I will check over the course of the weekend, and if I find a workable solution I'll paste it here later.
 
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flapjake314

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Hmm, I guess it should be possible to autosum / summarize a column in one part of the sheet and then paste the value in a other part of the sheet? I will check over the course of the weekend, and if I find a workable solution I'll paste it here later.
maybe i do a count formula on the first tab? or the bottom of the second tab? how do i get it to go on the chart though....

edit: i put a count on the top of the first tab now
 

mkhuffman

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Absolutely right👍

I doubt driving it like it’s a rental would cause your apparently SoH loss.

Might be the conditions under which you take the test giving a false reading, or something else, heat, the cold, charging habit, there are loads of imponderables.

Can’t you run a better condition test to see what every cell and array is doing?

But even if not a rental drive it mental😁

Life’s for the living, Stang’s for the enjoying🚗
I think it is most likely just my battery, and not how I have treated it.

I have been careful to avoid charging to 100% except for just before I go out of town. I have let it get down to less than 5% a few times, but that is unusual. It is rare for me to let it go below 20%. I have varied between charging it regularly to 80% and 90%. Maybe 90% was too high, but still, there is a buffer on the top end, so it was really more like 85% when I did that.

My car sits inside my climate-controlled garage, so it is not normally exposed to extreme temperatures. I rarely DCFC, so that is not a factor. The only thing I do that could be considered unusually stressful on the battery is WoTs fairly regularly. So if that is not it, then it is just my bad luck that I have a battery that is degrading faster than others.

BTW - this week I charged the car to 85.2 kWh, which is 85.2/91 = 94% of the original available capacity. Maybe SoH will come back up.
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