Battery health at 143,000 miles

[suprego]

Took my E-Pony into dealer for recall issues. I asked dealer to test for battery degradation. It is at 89.5%.

My 2021 Pony has 143,000 miles. That battery degradation is much better than I expected. For most people, that mileage is 10 years of driving.

I charged the car nightly up to 90%. Since new, I have used fast charging less than 20 times.

So I guess the car will last to 1.4 millions miles before battery degrades to 0%. Haa haaaa.

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[Haven]

Wow that is awesome! Keep on going, you can do a million. There was a Tesla driver who had done a million miles. He went through a couple motor replacements but not the battery.

It’s interesting that my battery state of health is the same at 89.5% although I have only 45,000 miles. I’ve charged mostly at home to 80% and have fast charged probably 20 times a year. I’m looking forward to surpassing 100,000 in the next few years.

 

[flapjake314]

i built a SOH tracker here: https://www.macheforum.com/site/thr...-analytics-crowdsourced-data-add-yours.38065/

welcome you to enter your datapoint both now and into the future. but either way, believe it or not, there is someone with similar miles at even higher SOH! see the data for details

 

[Zardoz]

i built a SOH tracker here: https://www.macheforum.com/site/thr...-analytics-crowdsourced-data-add-yours.38065/

welcome you to enter your datapoint both now and into the future. but either way, believe it or not, there is someone with similar miles at even higher SOH! see the data for details

Thanks for keeping this updated! Looks like during an update of the graphs the first and second graph got duplicated.

 

[flapjake314]

Thanks for keeping this updated! Looks like during an update of the graphs the first and second graph got duplicated.

i'll repaste, the forum interface is REALLY buggy when pasting these graphs in...

 

[Zardoz]

i'll repaste, the forum interface is REALLY buggy when pasting these graphs in...

All better!

 

[flapjake314]

All better!

you can just click the link to see the graphs anyway. i paste them there just for ease / super lazy people

 

[Snakebitten]

Wow that is awesome! Keep on going, you can do a million. There was a Tesla driver who had done a million miles. He went through a couple motor replacements but not the battery.

It’s interesting that my battery state of health is the same at 89.5% although I have only 45,000 miles. I’ve charged mostly at home to 80% and have fast charged probably 20 times a year. I’m looking forward to surpassing 100,000 in the next few years.

I'm pretty optimistic that you could gain back a few % of that SOH if you let your battery go down into the lower range of SOC and then L2 charge it to 100%.
Do it 2 or 3 times over the span of a couple of weeks.

Not sure exactly how Ford's SOH algorithm works, but it definitely responds positively to a good slow rebalancing of the cell pack.

I've nursed mine back to 96% from a low of 92%.

 

[GreaseMonkey]

I'm pretty optimistic that you could gain back a few % of that SOH if you let your battery go down into the lower range of SOC and then L2 charge it to 100%.
Do it 2 or 3 times over the span of a couple of weeks.

Not sure exactly how Ford's SOH algorithm works, but it definitely responds positively to a good slow rebalancing of the cell pack.

I've nursed mine back to 96% from a low of 92%.

Don’t you think your real soh was higher than 96% before calibration? How low did you go? How long has it been since you’ve done that? And does it last? I’m genuinely curious.

 

[Snakebitten]

The day I purchased the car, it was 100%

I'm sure that was bogus and the algorithm just hadn't had time to populate the equation.

I didn't really look at it again for a few weeks and it had dropped to 94%

A couple of months later it hit 92% and I decided to follow Mach-Lee's suggestion of using L2 charging and giving the BMS an opportunity to "balance" the pack.

Sure enough I gained a couple of % the first time.
I waited about a month and did the procedure again. Gained another %.

The third attempt gained yet another % and that's the screenshot of 96%.

Honestly, I still don't care as much about the SOH PID value as I do about how well balanced the battery pack is as it gets to the lower half of the SOC. To me that's far more indicative of how "healthy" a battery is since THAT is what determines the real range that the battery can provide to the vehicle.

I built a PID gauge that summarizes the balance of the battery pack at a glance. It has been interesting to watch the 100% L2 charging procedure narrow the variation of SOC between cells to basically NO variation, and watch the SOH value climb simultaneously.

It's the cluster of green pids/gauges below. (red arrow)

4Pids =
HVB minimum module voltage
HVB average module voltage
HVB variation SOC between modules
HVB variation voltage <> Batt modules

 

[Byrus]

Where do you guys get the red chart with the soh, etc.? Thanks.

 

[Snakebitten]

App called Carscanner

 

[Byrus]

Cool, thanks

 

[Haven]

I'm pretty optimistic that you could gain back a few % of that SOH if you let your battery go down into the lower range of SOC and then L2 charge it to 100%.
Do it 2 or 3 times over the span of a couple of weeks.

Not sure exactly how Ford's SOH algorithm works, but it definitely responds positively to a good slow rebalancing of the cell pack.

I've nursed mine back to 96% from a low of 92%.

I’ve tried that in the past but will give it another try. I did dial down my L2 charger from 50 to 30 amps since then and will try again. I usually run it down to around 20-30% and then back up to 80. I’m retired so have shorter daily drives and charge about every 5 days. In the past I have seemed to loose the most on long trips between Michigan and Florida. Perhaps that unbalances the cells? Will try what you suggest.

 

[Zardoz]

Where do you guys get the red chart with the soh, etc.? Thanks.

The app Snakebitten mentioned and an OBD2 reader like the one below. There are cheaper options, bu this one is known good for forscan.
https://www.amazon.com/dp/B07JFRFJG6

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