How Much Battery Capacity And Range Has My Ford F-150 Lightning Lost After 3 Years and 38,000 Miles?

[Firn]

Yes , and non of those require SOH. SOH is derived from those values, not the other way around.

You cant have it both ways.

If its measuring capacity based on energy in vs energy out then it is NOT using the voltage to determine capacity which was what you were claiming. And as we have seen in LFP packs this is also subject to drift.

If it is using energy in vs energy out to apply a bias to the voltage-capacity calculation then that IS a SOH calculation.

If it is mixing the two it is still using a SOH calculation to come to the capacity calculation.

Back to the point, in either case capacity is not calculated from a "foundational" voltage measurement which is the extension of claim I was pointing out was incorrect.

Capacity is an estimated value and should be treated with no more or less authority as the self reported SOH value

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[Yansolo31]

At just north of 41k miles, 100% SOH on the hvb when checked this am

 

[WaterboyNorCal]

As others have said, the SOH metric from the BMS isn’t a “perfect” measurement, and it does vary with the conditions (SOC, temperature, charging/calibration patterns, etc.) so we all need to take it with a grain of salt. For example, my 2023 XLT SR showed 97.5% when I first ran CarScanner about a year ago (Nov 2024) when the truck had about 28k miles on it. A few months later, in March 2024, with about 34k miles, the SOH had dropped down to 96%. I ran the “calibration procedure” a few weeks later and the SOH was showing 97% in late March/April. By July, the SOH was at 98% and by August, 98.5%. Just today, the SOH was up to 99%, and my odometer is at 49k.
Clearly the SOH is a metric that can vary quite a bit, and as Tom from State of Charge points out, the only way to truly test degradation is to charge from zero and see how much energy the battery can store. It also seems clear that Ford has designed a battery that does not deteriorate as quickly (at least not initially) as many other EVs, including Tesla vehicles. This may be due to the relatively large buffer and recommendation to avoid charging past 90% until you need the range, or could be due to the specific battery chemistry or cooling system. Regardless, it is definitely encouraging information.

 

[RLXXI]

As others have said, the SOH metric from the BMS isn’t a “perfect” measurement, and it does vary with the conditions (SOC, temperature, charging/calibration patterns, etc.) so we all need to take it with a grain of salt. For example, my 2023 XLT SR showed 97.5% when I first ran CarScanner about a year ago (Nov 2024) when the truck had about 28k miles on it. A few months later, in March 2024, with about 34k miles, the SOH had dropped down to 96%. I ran the “calibration procedure” a few weeks later and the SOH was showing 97% in late March/April. By July, the SOH was at 98% and by August, 98.5%. Just today, the SOH was up to 99%, and my odometer is at 49k.
Clearly the SOH is a metric that can vary quite a bit, and as Tom from State of Charge points out, the only way to truly test degradation is to charge from zero and see how much energy the battery can store. It also seems clear that Ford has designed a battery that does not deteriorate as quickly (at least not initially) as many other EVs, including Tesla vehicles. This may be due to the relatively large buffer and recommendation to avoid charging past 90% until you need the range, or could be due to the specific battery chemistry or cooling system. Regardless, it is definitely encouraging information.

I fully expect my truck and it's battery to out live me. I figure I've got at least 30 more to go. Mom and her older sis both in the 90's approaching 100.

Before that time happens I'm sure there'll be a smaller more powerful, faster charging pack for a direct swap. With all the F 150 loyalists and trucks around, someone will come up with something, that's almost a given.

 

[TaxmanHog]

I used car scanner for the first time today, this is my Soh [97.5 %] after 3+ years at about 88% Soc

The past several days / weeks I've been drawing down my SOC from 100% to 10%, had a longer Sunday drive to attend the commissioning of a American Legion Riders club charter, the weather was nasty so instead of riding the Road Glide, I took the Lightning, this allowed me to draw down the balance of charge on the round trip. Later yesterday evening I pumped the SOC back up from 10% to 100% overnight. Then commenced with or short drive routines today, only 11 miles so far and the SOC is still at 100% displayed.

This is the state of health data screen from Car Scanner this afternoon, health improved to 98% variation increased to 0.012v

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