Long term battery life

[ex2bot]

I looked at my SOH several months ago at 12k miles. Was (edit: still is at 1.8 y) 97.5% The trend with evs seems to be that the state of health drops a few percentages after the first year, followed by a very, very gradual very slow decline.

There’s extensive, extensive Tesla battery data out there, and it turns out they tend to last a very long time. I’m sure any kind of 400,000+ mile vehicle is going to be more prone to equipment failure, but a ton of Teslas with big miles are running just fine. The Mach-E batteries aren’t fundamentally different.

Incidentally, Tesla has a much more involved SOH test available I think in service mode.

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[emichnov]

For those of you that have had your Mach-E for 2+ years or at high mileage are you seeing any degradation of range yet?

Nope. 60k miles, 3.25 years old, and i haven't noticed appreciable range loss. The limiting factor on long distance trips is my bladder, not the hv battery. I think I am also at a 93.5 SOH, for whatever that is worth.

As stated, Leaf had an air cooled battery. Dumb. Did you ever read the actual user manual? Something like, "let the battery cool down for 3 hours before plugging it in" and other impractical instructions like that.

 

[sglewiswl]

On the Leaf the SoH was accurate but we could see the value of each individual cell to calculate it. We could then use the SoH * miles/kWh to get the range which varied depending on how quickly the battery discharged. When I last checked the Leaf before trading it in my 25 kWh battery was at 61% SoH or 15.25 kWh which I would see on charging the battery back up. Its version of the GOM would show about 59 miles on full charge.
I would also agree on the time statement. My leaf only had 16k miles but was a 13 year old battery. It was losing 1% of capacity per month.
The Mach-E being more sophisticated and having a temperature management system should get us 10-15 years or so depending on climate.

 

[sglewiswl]

I am going to say going from a car with 60 miles of range to a car with over 200 miles is a profound change. My only challenge now is that I have 120v L1 charger in my garage.

 

[MacherAWD]

On the Leaf the SoH was accurate but we could see the value of each individual cell to calculate it. We could then use the SoH * miles/kWh to get the range which varied depending on how quickly the battery discharged. When I last checked the Leaf before trading it in my 25 kWh battery was at 61% SoH or 15.25 kWh which I would see on charging the battery back up. Its version of the GOM would show about 59 miles on full charge.
I would also agree on the time statement. My leaf only had 16k miles but was a 13 year old battery. It was losing 1% of capacity per month.
The Mach-E being more sophisticated and having a temperature management system should get us 10-15 years or so depending on climate.

When I sold my 2013 Leaf it was 8 years old, 85k miles, and was at 93% health. My mach-e (SR AWD) is currently 4 years, 55k miles, and I cant tell if it has lost any range, I can still confidently charge it to 100% and bang out almost 190 highway miles before a charge stop. Like others report I am not expecting to lose any significant amount of range.

 

[Sikkun]

Anything below 70%/8 years/100k miles would be a warranty claim.

 

[Sikkun]

Did you ever read the actual user manual? Something like, "let the battery cool down for 3 hours before plugging it in" and other impractical instructions like that.

Like the Mach E manual….

“It is recommended to set your preferred
charging times to be at least 2-3 hours
after your typical plug in time. This allows
the battery to cool before charging begins.”

 

[Teslaeata]

Nope. 60k miles, 3.25 years old, and i haven't noticed appreciable range loss. The limiting factor on long distance trips is my bladder, not the hv battery. I think I am also at a 93.5 SOH, for whatever that is worth.

As stated, Leaf had an air cooled battery. Dumb. Did you ever read the actual user manual? Something like, "let the battery cool down for 3 hours before plugging it in" and other impractical instructions like that.

Interestingly, I stripped air cooled batteries and their connectors were all oxidising because air circulating around the batteries carries moisture.

Conversely, I saw my battery removed during that HVBJB replacement and such is the effectiveness of the seals around the battery compartment everything in there was found to be pristinely clean and no corrosion existed anywhere.

 

[VindictivePantz]

89.5% at 68,000 miles on a 2021 Job 1. It's improved by 0.5% over the past few months, and I imagine if I did a full calibration, I'd probably eek out another 1%-2%.

 

[sglewiswl]

Interestingly, I stripped air cooled batteries and their connectors were all oxidising because air circulating around the batteries carries moisture.

Conversely, I saw my battery removed during that HVBJB replacement and such is the effectiveness of the seals around the battery compartment everything in there was found to be pristinely clean and no corrosion existed anywhere.

I hope someone takes on my old Leaf and replaces the battery. I was the 3rd owner and the car is like new. I had hoped battery prices would drop and make a 40+ kWh upgrade practical, but the only local source in MI for a 40kWh battery was going to be $9500. I put that $9500 towards the Mach-E.
The day I drove the Leaf to pickup the Mach-E it was 50, cold and rainy and I had the wipers and defrosters on. Fully charged at home and it was blinking low battery on the 20 miles to the dealership.

 

[MacherAWD]

I hope someone takes on my old Leaf and replaces the battery. I was the 3rd owner and the car is like new. I had hoped battery prices would drop and make a 40+ kWh upgrade practical, but the only local source in MI for a 40kWh battery was going to be $9500. I put that $9500 towards the Mach-E.
The day I drove the Leaf to pickup the Mach-E it was 50, cold and rainy and I had the wipers and defrosters on. Fully charged at home and it was blinking low battery on the 20 miles to the dealership.

The Mach-e is SOOOO much more fun though. I sold my Leaf and bought a Bolt in 2020, that was a great upgrade, same size, just much faster and much more range. Although now with a Bolt and Mach-e I only drive the Bolt if my wife has stolen the MME.

 

[Teslaeata]

I looked at my SOH several months ago at 12k miles. Was 95 or 96. The trend with evs seems to be that the state of health drops a few percentages after the first year, followed by a very, very gradual very slow decline.

There’s extensive, extensive Tesla battery data out there, and it turns out they tend to last a very long time. I’m sure any kind of 400,000+ mile vehicle is going to be more prone to equipment failure, but a ton of Teslas with big miles are running just fine. The Mach-E batteries aren’t fundamentally different.

Incidentally, Tesla has a much more involved SOH test available I think in service mode.

If I’m honest, I don’t believe there ever was a 100% SoH if I started monitoring when new!

I started monitoring SoH a few miles in, around 35,000, at probably around a year old, at around 95%.

Simply can’t believe it dropped to 95% in that mileage and short time and distance and only a further 1.5% over next 3yrs 4mths and 90,000 miles.

 

[Adventureboy]

The first time I checked SOH on my 2022 was a couple of months after new. It was at 96%. I was concerned since it seemed to drop 4% in such a short period of time. Over 3 years later, it is still at 96% range is exactly as I expected.
Apparently, it is common for the pack to find an equilibrium between 95-98% shortly after new and stay there for quite a while before slowly degrading in small amounts.
No longer worried.

 

[Teslaeata]

The first time I checked SOH on my 2022 was a couple of months after new. It was at 96%. I was concerned since it seemed to drop 4% in such a short period of time. Over 3 years later, it is still at 96% range is exactly as I expected.
Apparently, it is common for the pack to find an equilibrium between 95-98% shortly after new and stay there for quite a while before slowly degrading in small amounts.
No longer worried.

Interesting, and sort of confirms my suspicions that there was never actually a 100% SoH.

I wonder if anybody ever has got a 100% reading when new.

 

[janstubbs]

For those of you that have had your Mach-E for 2+ years or at high mileage are you seeing any degradation of range yet? I recently traded in my 2012 Nissan Leaf for a 2021 Select Std range AWD. Even though the Leaf only had 16k miles on it the battery was at 62% of the 25Kwh battery. I'm curious how long the battery life is going to be on the Mach-E.

My 2022 Select with no options is at 70,000 miles with about 10 miles of range lost, maybe 4%,

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