6% Battery Degradation after 3 years, 35k miles

[PianoDan0]

Really interesting! Keep us posted the effect on SoH the new modules have.

Assume you’re having 2 modules changed rather than 2 cells, didn’t think it was possible to change cells in the MME and when modules need changing they should be swapped in pairs is my understanding.

Will do! Could be a while though.

Yeah, I mixed terminology. I said cells in one place and modules in another but yeah you're right it's 2 modules.

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[Teslaeata]

Will do! Could be a while though.

Yeah, I mixed terminology. I said cells in one place and modules in another but yeah you're right it's 2 modules.

I’m supposed to be an expert and I also muddle the names of stuff?

Supposed to be having my HVJB changed when parts arrive here in the UK - probably on a slow boat from China - and am promised a look at the battery when it’s out on the floor which will be interesting.

Am at 84,000 miles, not due a service until car’s done 100k, intervals are 2yrs unlimited miles her in UK which for me is c60k?

May get the transmission oil changed and have the old analysed for iron, copper etc content to see if there’s a clue any part is wearing.

It’s a bit of a project, owning a fully EV and am enjoying every moment so far, especially buying into the Mustang brand which carries some kudos, I feel.

Enjoy yours.

 

[Tom L]

According to the Car Scanner app, my '21 Select, RWD, Std Battery shows 6% degradation after 39 months and 35k miles. This was checked after an 80% charge and an ambient temp of 68 deg. The GOM used to show 200 miles on an 80% charge but now shows 190 (which is down about 6%). Sound about right?

At 38,000 miles SOH in my 22 CR1 RWD with EXT battery is 92.5% with no change in at least 12 months.

 

[Earlofsandwich]

I had a question for everyone and there might not be a good answer. After about a year and half and 48k km I have 13% degradation on my 22 select. I used the car scanner app to check the HVB health which is at 87% and the energy to empty at 100 is 60 kWh which is way less the the 70 kWh max

My thought is that if the battery is sectioned into 8-10 individual battery modules, is it possible one of my modules completely died? Is there a way to check the health of the individual module health? I feel like I am in no mans land between normal degradation and enough degradation for a warranty claim I believe ford has the warranty set to below 70% health.
And yes up until today I always charge to 80% and only have charged to 100% a handful of times for long trips.
any thoughts or help would be greatly appreciated.

 

[Teslaeata]

I had a question for everyone and there might not be a good answer. After about a year and half and 48k km I have 13% degradation on my 22 select. I used the car scanner app to check the HVB health which is at 87% and the energy to empty at 100 is 60 kWh which is way less the the 70 kWh max

My thought is that if the battery is sectioned into 8-10 individual battery modules, is it possible one of my modules completely died? Is there a way to check the health of the individual module health? I feel like I am in no mans land between normal degradation and enough degradation for a warranty claim I believe ford has the warranty set to below 70% health.
And yes up until today I always charge to 80% and only have charged to 100% a handful of times for long trips.
any thoughts or help would be greatly appreciated.

You will need a professional diagnostic tool, I think, then you will be able to see individual cell voltages, Ah capacities, module temperatures etc.

If I can find you an example of mine I’ll let you see it.

My usage over 34mths & nearly 84,500miles is:

29,468.61kWh charge power ought

449 home charges @11kW mostly to 100%

238 DCFC charges often to 80%

If that charge profile don’t ruin a battery yours should not have done!!

 

[Teslaeata]

I had a question for everyone and there might not be a good answer. After about a year and half and 48k km I have 13% degradation on my 22 select. I used the car scanner app to check the HVB health which is at 87% and the energy to empty at 100 is 60 kWh which is way less the the 70 kWh max

My thought is that if the battery is sectioned into 8-10 individual battery modules, is it possible one of my modules completely died? Is there a way to check the health of the individual module health? I feel like I am in no mans land between normal degradation and enough degradation for a warranty claim I believe ford has the warranty set to below 70% health.
And yes up until today I always charge to 80% and only have charged to 100% a handful of times for long trips.
any thoughts or help would be greatly appreciated.

Best I can do for now, dated 3rd Feb 2024

 

[Earlofsandwich]

You will need a professional diagnostic tool, I think, then you will be able to see individual cell voltages, Ah capacities, module temperatures etc.

If I can find you an example of mine I’ll let you see it.

My usage over 34mths & nearly 84,500miles is:

29,468.61kWh charge power ought

449 home charges @11kW mostly to 100%

238 DCFC charges often to 80%

If that charge profile don’t ruin a battery yours should not have done!!

Are you running the LiFePO cells or the NiCr ones? I am sure it’s bad luck

 

[Teslaeata]

Sure it’s not the Phosphate battery as mine is job 1 car or near to it.

 

[JTMACHEGT]

That's not necessarily the case. There was an OTA update recently that changed the way that the SOH value is calculated. That resulted in batteries appearing to lose SOH, but nothing has actually changed.

Can you tell us more about the OTA update on this? I noticed the same thing about 30 days or so ago and I have 30k miles and all the sudden, I go from an average of 230 miles at a 90% charge to like 212 or something. It was pretty sudden and I was thinking either the battery went to shit or they did an update to take back some of the volume they opened up a while back when they added 10% range...

 

[Earlofsandwich]

Can you tell us more about the OTA update on this? I noticed the same thing about 30 days or so ago and I have 30k miles and all the sudden, I go from an average of 230 miles at a 90% charge to like 212 or something. It was pretty sudden and I was thinking either the battery went to shit or they did an update to take back some of the volume they opened up a while back when they added 10% range...

I think it was around the time I got the 24-PU0102-CHG-SUFX update. I remember I was having trouble with the 12v failing the update so I was trying all the tricks for the 12v charge.

 

[Mach-Lee]

Can you tell us more about the OTA update on this? I noticed the same thing about 30 days or so ago and I have 30k miles and all the sudden, I go from an average of 230 miles at a 90% charge to like 212 or something. It was pretty sudden and I was thinking either the battery went to shit or they did an update to take back some of the volume they opened up a while back when they added 10% range...

Yes, the 24-PU0102-CHG-SUFX update changed the SoH calculation which caused the indicated SoH value to drop for many people. But that doesn't mean the battery actually degraded or that they removed some of the buffer. They just updated the calculation to be more accurate. Performing a battery calibration procedure several times will help the SoH value be as accurate as possible on your vehicle.

Mach-E's that are 2-3 years old will typically have battery SoH values in the 90-95% range (unless they have a ton of miles) which is normal/expected based on age.

 

[TRP]

Looks like your mileage is tied with Teslaeata's. You don't have to spend much at all. You need a OBDII bluetooth adapter (~$30) and the free "Car Scanner" app.

I got lucky..............I had an OBDII in a drawer that I had forgotten about. I only had a few minutes but at 100% charge batter health showed 96.5%. Pretty happy with that. I didn't have time to really dig through the app and learn anything else. Now that I know I can do it, I will definitely spend some time with it

84xxx miles and 96.5% SOH

 

[Teslaeata]

I got lucky..............I had an OBDII in a drawer that I had forgotten about. I only had a few minutes but at 100% charge batter health showed 96.5%. Pretty happy with that. I didn't have time to really dig through the app and learn anything else. Now that I know I can do it, I will definitely spend some time with it

84xxx miles and 96.5% SOH

That’s really good!

You must treat yours more kindly than I do?

 

[Chainspell]

I got lucky..............I had an OBDII in a drawer that I had forgotten about. I only had a few minutes but at 100% charge batter health showed 96.5%. Pretty happy with that. I didn't have time to really dig through the app and learn anything else. Now that I know I can do it, I will definitely spend some time with it

84xxx miles and 96.5% SOH

That's really good. Care to share your charging and driving habits?

 

[JimmyMachE]

Oof, just took my car in for service this week and they said 2 of the HVB cells need replacing so that may explain my 89.5% SOH! They said battery modules are on backorder, so could be a while... This is annoying, but on one hand I'm getting some new cells that may extend the life of the battery a bit, I guess?

Apart from SOH, CarScanner has more sensors showing battery degradation.

Before replacing 2 faulty modules, please check these:
HVB SOC Variation Battery Modules %
HVB Minimum Module Voltage
HVB Average Module Voltage
HVB Voltage Variation Battery Modules

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