Tesla Battery Degradation only 12% after 200k miles (from official Tesla Impact Report)

[Old Spice]

https://electrek.co/2023/04/25/tesla-update-battery-degradation/

Tesla gives update on battery degradation: only 12% after 200,000 miles

April 25, 2023

Tesla released its 2022 Impact Report, and the automaker updated its battery degradation data – now reporting 12% battery degradation after 200,000 miles:

Tesla is also only referring to Model S and Model X battery degradation – presumably because it has more long-term data on those vehicles.

Early data from newer Model 3 and Model Y vehicles also show strong capacity retention of less than 10% after 100,000 miles and less than 15% after 200,000 miles, but not many vehicles have reached those mileages just yet.

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[Crissa]

Early data from newer Model 3 and Model Y vehicles also show strong capacity retention of less than 10% after 100,000 miles and less than 15% after 200,000 miles, but not many vehicles have reached those mileages just yet.

Man, those guys need to up their editing game.

-Crissa

 

[SpaceYooper]

"Only" is subjective. I still have a problem with that when about 1/2 of that degradation appears (per the graph) to be in the first 50k miles. I'm really hoping the 4680s perform better over the long term.

Given 500x94%=470 miles full to empty and we do not drive full to empty so 80% of that 470=376 miles in ideal condition and not towing.

We talked about this years ago. I imagine I'll still catch hell for saying this latest stat isn't good enough...but it's not. I literally just filled my tank up in my truck at 501 miles and still had about 30 to go (per my dash anyway..likely less). That's a 10-year-old, F150 4x4, with 136k miles on it, riding on 35s.

Ok...it's not a fair comparison, because I don't have a gas pump at my house and not fair because I undoubtedly used more than 80% of my gas tank capacity (full to ~2%). I get it. I also get that it won't be a problem most of the time. And yes, I read the whole article and it was based on old battery chemistries, and yes I saw the comment;
"The most important factor, in my opinion, isn't even mentioned - pack size. A smaller battery will be cycled many more times than a large battery over the vehicle lifetime."
This is only true given the bigger battery goes into a similar weighted car. If the bigger battery goes into a much heavier car (or truck) the bigger battery may get cycled just as often.

The CT ...especially the 500+ mile variant is going to have the biggest and most advanced Tesla battery to date (outside of the semi). So there is still a lot to be hopeful about.

To be the king, you have to beat the king. It's not gas's fault that batteries don't perform their best when they are routinely fully charged or discharged. If the F150 is the target, and I'm sure it is since it's been the #1 selling full-size truck pretty much forever, and who could forget the tug of war, (they didn't pull an F250, RAM, Silverado, or anything else) and if range is still king in the EV world, (I believe it is...especially with trucks) then a brand new, top range, CT should beat down the range of my ol' F150 no problemo!

I don't care if it's through better battery chemistry or a bigger battery or a combination thereof. I don't even care if big daddy Tesla puts in a giga giant battery and limits me to 80% charge (but displays 100% charge) of said battery giving me ~500 miles of range while limiting the damage I can do to the battery life. Then maybe after 6 years they "unlock" the rest of the battery and keep me above 500 miles of range for the next 6 years...or 14 years or whatever. I don't care. I don't need to know. I just need to know paid for 500 miles and I'm getting it.

I'm sure we are all in violent agreement. Replies are not necessary.

 

[Crissa]

Batteries don't just degrade when used - they degrade when not used.

-Crissa

 

[CyberGus]

Batteries don't just degrade when used - they degrade when not used.

-Crissa

Correct. Batteries will degrade as time passes regardless. Individual usage behavior is a factor, but is not critical.

I'm not worried at all about range loss as I am about pack failure. The failure rate is low, but the consequence expensive.

 

[HaulingAss]

https://electrek.co/2023/04/25/tesla-update-battery-degradation/

Tesla gives update on battery degradation: only 12% after 200,000 miles

April 25, 2023

Tesla released its 2022 Impact Report, and the automaker updated its battery degradation data – now reporting 12% battery degradation after 200,000 miles:

Tesla is also only referring to Model S and Model X battery degradation – presumably because it has more long-term data on those vehicles.

Early data from newer Model 3 and Model Y vehicles also show strong capacity retention of less than 10% after 100,000 miles and less than 15% after 200,000 miles, but not many vehicles have reached those mileages just yet.

Wait a minute, that can't be! I was told that EV batteries would only last 4 years before needing expensive replacement!

 

[Diehard]

Batteries don't just degrade when used - they degrade when not used.

-Crissa

Has any studies been done on impact of time vs usage? Should I keep my batteries in my driveway or use the heck out of them?

Edit: how much of a difference is between 10 years operating at 80-90 SOC vs 50-60 SOC In terms of capacity and chance of failure?

 

[Crissa]

Has any studies been done on impact of time vs usage? Should I keep my batteries in my driveway or use the heck out of them?

Edit: how much of a difference is between 10 years operating at 80-90 SOC vs 50-60 SOC In terms of capacity and chance of failure?

Not sure. It's a good question. Most batteries in storage sit at high or low charge.

-Crissa

 

[Diehard]

Not sure. It's a good question. Most batteries in storage sit at high or low charge.

-Crissa

Since I don't drive much, I try to operate mine 30-70 SOC charging and driving so that it spends most of it's time between 40 and 60. I hear for Lithium-ion 40-50 SOC is optimum for storage. The difference is probably not huge and battery will fail due to something else long before any of this make a difference, but I am sure the company appreciate me saving them a warranty repair/replacement It is all like magic to me. My truck has a reading for battery health in % but I have no clue what they are measuring.

 

[HaulingAss]

My truck has a reading for battery health in % but I have no clue what they are measuring.

Ford? It's likely a number interpreted through the lens of "we don't want to warranty anything other than blatant defects" so the number is probably not representative of any simple thing, but a formula that doesn't make much sense in terms of anything but reducing the claimed number of battery failures during the warranty period.

Don't worry, the easy duty-cycle you subject your truck to will all but guarantee you don't have to worry about battery replacement (assuming everything is looking normal at this stage).

 

[Diehard]

Ford? It's likely a number interpreted through the lens of "we don't want to warranty anything other than blatant defects" so the number is probably not representative of any simple thing, but a formula that doesn't make much sense in terms of anything but reducing the claimed number of battery failures during the warranty period.

Yup. On my Lightning. The battery health reading is not available through the normal interface. I got it through ODB II. Mine still says 100% as it should with only 2.5K on odometer. You are probably right, it may be there to prevent something like Bolt fiasco / PR nightmare so they can quietly replace a battery module that is about to blow up during a routine maintenance before it hits the news. I am cool with that but still curious about that formula and the engineering of it.

p.s. Extra cooling for the battery was an option I took to help out with longevity.

 

[John K]

When will Tesla begin making Apple cellphone batteries?

 

[charliemagpie]

Or portable power generators

That would sell in the millions

I want a Tesla portable generator... I want one .. big red Tesla logo on it.

 

[Diehard]

Or portable power generators

That would sell in the millions

I want a Tesla portable generator... I want one .. big red Tesla logo on it.

If it is powered by dino juice with sufficient noise and dark enough smoke, it could attract those that want an EV bad but in no way ready to compromise on their environmental destruction aspirations.

 

[charliemagpie]

Of course not... battery

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