94% Battery Health After 8,200 Miles

[RoyalFlush555]

Hey all,

As the title states, both Car Scanner and ABRP report a 6% battery degradation after 8,200 miles. It hasn't kicked out any errors or service notifications. It doesn't live on a charger at home (two EV house; one car driveway) but we're careful to keep it's SOC between 20% and 80%.
It seems an atypically large amount considering what I've read hear and elsewhere on what the expected degradation is. I'm curious what folks here think.

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[tkm7501]

Hey all,

As the title states, both Car Scanner and ABRP report a 6% battery degradation after 8,200 miles. It hasn't kicked out any errors or service notifications. It doesn't live on a charger at home (two EV house; one car driveway) but we're careful to keep it's SOC between 20% and 80%.
It seems an atypically large amount considering what I've read hear and elsewhere on what the expected degradation is. I'm curious what folks here think.

I wouldn’t worry about it too much. You can usually expect 10% degradation within the first 10-15k miles. Not always but a possibility. I had my Tesla Model 3 for 2 years. I had almost 80k miles with 9.8% degradation. 7% of that was in the first 15k ish miles.

Just keep an eye on it.

 

[jbirdzee]

What ambient temps do you have right now? Also, if you dont charge to 100% for prolonged periods the BMS SOH estimator is believed to diverge from the actual SOH.. This happened on my MME a few times where some charges to 100% and taking the SOH reading at a (non winter) higher ambient raised this 3% for me

@RickLightning had a good post about it here: https://www.f150lightningforum.com/...1-kw-of-usable-power.21697/page-2#post-425213

 

[William Munny]

Is there a way to check battery health on ford pass or the infotainment screen?

 

[TaxmanHog]

Is there a way to check battery health on ford pass or the infotainment screen?

No

 

[lightning-spark]

It means nothing. I have seen posts where that value can change after the battery is cycled from a low percentage to 100%.

 

[SpaceEVDriver]

Two things:
The information you're getting is an estimate of the SoH. The actual SoH analysis the dealer does is more complex. It's very unlikely you would have the same value if the dealer analyzed it.

Because of the way the BMS tracks battery charging and discharging, over time it can lose synchronization with the true capacity of the battery. As mentioned above, as part of my yearly maintenance, I do a drive period of no charging until the truck is down to <10% and then I'll recharge up to 100% without driving the vehicle, on a L2 charger. This often resets the SoH as found by CarScanner.

 

[Scorpio3d]

Hey all,

As the title states, both Car Scanner and ABRP report a 6% battery degradation after 8,200 miles. It hasn't kicked out any errors or service notifications. It doesn't live on a charger at home (two EV house; one car driveway) but we're careful to keep it's SOC between 20% and 80%.
It seems an atypically large amount considering what I've read hear and elsewhere on what the expected degradation is. I'm curious what folks here think.

Have you ever charged to 100%? and when was the last time? You might try that. From other threads on the forum, you don’t really want to do 20 to 80% unless necessary! ABC-always be charging. I pretty much plug in every night except for the nights I forget or when I have a high SOC to begin with. I have just under 13,000 miles in nine months And my SOH is 99.5%!

 

[mr.Magoo]

Have you ever charged to 100%? and when was the last time? You might try that. From other threads on the forum, you don’t really want to do 20 to 80% unless necessary! ABC-always be charging. I pretty much plug in every night except for the nights I forget or when I have a high SOC to begin with. I have just under 13,000 miles in nine months And my SOH is 99.5%!

... and I never keep it plugged in unless I'm actually have to charge (charger is attached to the house and the truck is in a detached garage), nor do I follow any recommendations to avoid big deltas, nor do I precondition (for the same reasons as not keeping it plugged in).

I do L2 charge to 100% about every 6 months or so and my normal charge limit is 80%.

I've fast charged maybe 30 times overall.

My SoH is still 100% after 27 months and 18,000 miles, despite all the abuse.

 

[Scorpio3d]

... and I never keep it plugged in unless I'm actually have to charge (charger is attached to the house and the truck is in a detached garage), nor do I follow any recommendations to avoid big deltas, nor do I precondition (for the same reasons as not keeping it plugged in).

I do L2 charge to 100% about every 6 months or so and my normal charge limit is 80%.

I've fast charged maybe 30 times overall.

My SoH is still 100% after 27 months and 18,000 miles, despite all the abuse.

I have not charged to 100% in a while. It’s probably about time. Might bring it back up to 100% SOH.
I home charge (L2-FCSP) probably 99% of my total charges as well as I do not travel farther than my ER will get me very often.

 

[RoyalFlush555]

Thanks for the input everyone - this has eased my anxiety around the battery quite a bit. I've been in the Tesla ecosystem for the last 6 years, so avoiding 100% SoC unless road-tripping is fairly hardwired into me at this point. I believe I saw a YT vid at one point about how 100% on the Lightning doesn't actually mean 100% and that Ford is fudging the numbers a bit to make it easier on the end user.

What ambient temps do you have right now? Also, if you dont charge to 100% for prolonged periods the BMS SOH estimator is believed to diverge from the actual SOH.. This happened on my MME a few times where some charges to 100% and taking the SOH reading at a (non winter) higher ambient raised this 3% for me

@RickLightning had a good post about it here: https://www.f150lightningforum.com/...1-kw-of-usable-power.21697/page-2#post-425213

We're in the PNW, so temps have dropped but have still been a fairly north of freezing. Thank you for the reference post, I'll give that test a try on the other side of winter.

Two things:
The information you're getting is an estimate of the SoH. The actual SoH analysis the dealer does is more complex. It's very unlikely you would have the same value if the dealer analyzed it.

Because of the way the BMS tracks battery charging and discharging, over time it can lose synchronization with the true capacity of the battery. As mentioned above, as part of my yearly maintenance, I do a drive period of no charging until the truck is down to <10% and then I'll recharge up to 100% without driving the vehicle, on a L2 charger. This often resets the SoH as found by CarScanner.

I think I'll fold this into my routine as well. Thank you!

Have you ever charged to 100%? and when was the last time? You might try that. From other threads on the forum, you don’t really want to do 20 to 80% unless necessary! ABC-always be charging. I pretty much plug in every night except for the nights I forget or when I have a high SOC to begin with. I have just under 13,000 miles in nine months And my SOH is 99.5%!

Yeah, I will charge up to 100% before any longer trips out of town, the last time was a few months ago. Heard on the 20-80 stuff, this thread has helped me realize that I can't just import the battery hygiene routine I'm used to from owning a Model 3 for several years. Thank you for the advise!

 

[Adventureboy]

When you charge to 100%, make sure you allow it to get all the way to 100% before unplugging, and even leave it there for a couple of hours. This gives the BMS time to balance all of the packs and cells. If you haven't done this for a while, it can take several hours to go from 99%-->100% as it goes through this process.

 

[Robob]

If you're not checking with the FDRS/OASIS software I would take it with a grain of salt. I'm sure some of the BCM monitoring is held in the proprietary software for fords FDRS and not shared over OBD.
For instance, I just ran the FDRS BECM Health on my Flash at 4556mi last time I updated and still shows 100% battery health.
see attached:

 

[Jesse-Infotainment]

Dealer Access Oasis can see High Voltage Battery health.

 

[kstype]

That SoH measure takes into account several different metrics but I could not get Ford to disclose all of them. I would not worry about it - I saw mine after a 2,000 plus mile road trip this summer with mostly DCFC get as low as 97.5 percent but that gradually worked it’s way back up to 98.5% in the fall and I am now at 98% SoH and I have 61,000 miles on my 2023 Lariat ER (with max-tow package and extra cooling loop).

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