Tesla Battery Degradation - The results using real data and why the Plaid is the worst Tesla
Summary
TLDRThis video explores Tesla's battery degradation across various models, including Model 3, Y, S, and X, using extensive data. It reveals that most battery capacity loss occurs early, with varying degradation rates depending on the model and battery type. The script notes significant differences between battery cohorts, particularly for performance models and larger batteries in powerful cars, suggesting that stress impacts longevity. The analysis provides insights into battery performance over time, helping viewers understand Tesla's battery life expectancy.
Takeaways
- 🔋 The Tesla battery degradation analysis is based on data collected from thousands of cars and data points, with a focus on models like the Model 3, Model Y, Model S, and Model X.
- 📊 The data used for analysis comes from the Tesla API, which may have some accuracy issues due to factors like battery management system calibration and cell balancing.
- 📉 Batteries in Model 3 long range cars from 2018 to 2020 show a consistent degradation pattern, with a drop from around 74 kWh to around 67 kWh by 100,000 miles, indicating a 9.5 kWh decrease.
- 🌐 In 2022, there's a divergence in battery performance, with some batteries showing more degradation than others, possibly due to differences in manufacturing locations and battery types.
- 🇨🇳 Chinese-built Model 3 and Model Y with LG Chem batteries show less degradation (around 6%) compared to those built in Fremont with Panasonic batteries (around 11%).
- 🚗 Standard range Teslas, especially from 2019 to 2021, show minimal battery capacity drop even after 100,000 miles, with some maintaining around 46 kWh.
- 🔬 Performance models show a wide variation in battery capacity, with some showing significant degradation, possibly due to the use of the same batteries as the long-range models.
- 📉 The Model S and Model X from 2021 show a significant drop in battery capacity, especially for the Plaid models, which could be due to the higher stress on the batteries in these high-performance cars.
- 🚀 Original Model S 85D and 90D batteries show two distinct cohorts, with some maintaining high capacity and others showing significant degradation, possibly due to battery gate or replacement batteries.
- 🛣️ The 75D model shows remarkably flat degradation, maintaining a stable capacity even after 100,000 miles, suggesting good battery health over time.
- 🔌 The 100D and P100D models, despite not reaching their advertised capacity, show a leveling off of degradation after 50,000 miles, suggesting a stabilization in battery performance.
Q & A
What is the main topic of the video?
-The main topic of the video is Tesla battery degradation, analyzing data collected from various Tesla car models over time.
Which Tesla models are covered in the video?
-The video covers Model 3, Model Y, Model S, and Model X, including some older models.
What is the potential issue with the data collected using the API mentioned in the video?
-The potential issue with the data collected using the API is the absolute accuracy, which may be affected by whether the car's Battery Management System (BMS) is calibrated or the cells are balanced.
How does the video address the concern about data accuracy?
-The video acknowledges the potential inaccuracies but argues that the trends observed in the data are still valid and provide insights into battery performance over time.
What is the general location of the battery pack in a Tesla vehicle?
-The battery pack in a Tesla vehicle is generally located in the floor of the car and, in some cases, serves as a structural component.
What is the observed battery capacity drop for Model 3 Long Range batteries by 50,000 miles?
-By 50,000 miles, the Model 3 Long Range batteries on average drop to about 69 kWh, which is a 6.7% decrease from the starting capacity.
How does battery degradation differ between cars built in 2020 and those from 2022 according to the video?
-The video shows that cars built in 2020 and 2022 have similar initial degradation patterns, but there seems to be a divergence in the data for 2022, with some batteries showing different rates of degradation possibly due to manufacturing differences or battery types.
What is the significance of the variation in battery degradation between different cohorts of batteries?
-The variation in battery degradation between different cohorts indicates that factors such as manufacturing location, battery type, and year of production can significantly affect battery performance and longevity.
How does the video describe the degradation of Performance Model batteries?
-The video describes a wide spread in the capacity of Performance Model batteries, with a significant difference in reported capacities even among cars of the same model and year.
What trend is observed in the degradation of Model S and Model X batteries from around 2021?
-The trend observed for Model S and Model X batteries from around 2021 is a significant drop in capacity, with an 11% decrease at 50,000 miles, and a continued decline for the Plaid models.
What conclusion does the video draw about the relationship between battery size and degradation?
-The video concludes that the largest batteries in the most powerful cars, such as the Performance Models, tend to degrade more quickly, possibly due to the increased stress on the batteries.
Outlines
🔋 Tesla Battery Degradation Analysis
This paragraph introduces a comprehensive analysis of Tesla battery degradation, covering various models including Model 3, Model Y, Model S, and Model X. The data was collected using Tesla's API, which may have some accuracy issues but is still considered valid for trend analysis. The script discusses the battery composition, with Tesla using larger cells in newer models, and how these batteries degrade over time. The focus is on the Model 3 Long Range, noting a significant drop in battery capacity by 50,000 miles, with a further decrease by 100,000 miles. The paragraph also highlights variations in degradation rates between batteries manufactured in different locations and years.
📉 Battery Performance Trends in Tesla Models
The second paragraph delves into the performance trends of Tesla batteries, particularly focusing on the Model 3 Standard Range and noting a minimal capacity drop even at high mileages. It then contrasts this with the Model S and Model X, where a significant degradation is observed, especially in the Performance models. The analysis also touches on the Model Y, which shows similar degradation patterns to the Model 3. The paragraph concludes with a look at the original Model S 85D and 90D, highlighting the difference in degradation between two distinct groups of batteries, possibly due to the 'Battery Gate' or replacement batteries.
🚗 Impact of Usage and Model on Battery Degradation
In the final paragraph, the script examines the degradation of the 75D battery, which shows remarkably flat degradation even at 100,000 miles. It also discusses the 100D and P100D models, noting that these batteries do not seem to have reached their intended capacity and degrade more significantly, especially in high-performance models. The summary suggests that the largest batteries in the most powerful cars degrade the most, likely due to the increased stress on the battery. The script concludes by emphasizing that most battery degradation occurs early on and levels off later, with the biggest batteries in performance models showing the most significant degradation.
Mindmap
Keywords
💡Battery degradation
💡Tesla API
💡Battery cells
💡Battery pack
💡Model 3 Long Range
💡Battery capacity
💡Manufacturing variance
💡Standard Range cars
💡LFP batteries
💡Model S and Model X
💡Battery gate
Highlights
Tesla's battery degradation analysis covers various models, including Model 3, Model Y, Model S, and Model X.
Data collected from thousands of cars and data points, with acknowledgment of potential inaccuracies due to API usage.
Tesla's battery cells have evolved, with Model S and Model X still using the older size cells.
Model 3 long-range batteries showed an average 6.5% capacity drop by 50,000 miles and 9.5% by 100,000 miles.
2020 Model 3 batteries exhibit similar degradation patterns to earlier models.
2022 Model 3 batteries show two distinct cohorts with different degradation rates, possibly due to different battery manufacturers.
China-built LG Chem batteries in Model 3 show less degradation compared to Fremont-built Panasonic batteries.
Standard range cars show minimal battery capacity drop, with some maintaining over 90% capacity even at 120,000 miles.
2021 and 2022 standard range batteries introduce LFP chemistry with low degradation rates.
Performance models show a wide variance in battery capacity, possibly due to the use of the same batteries as long-range models.
Model Y long-range batteries show similar degradation patterns to Model 3, with early steeper degradation leveling off.
Model S and Model X from 2021 show significant degradation, especially the Plaid variant with an 11% drop at 50,000 miles.
Original Model S 85D shows two distinct battery cohorts, possibly due to battery gate or replacement batteries.
Model 90D batteries maintain a reasonable amount of capacity even after significant mileage.
Model 75D batteries show remarkably flat degradation, maintaining over 90% capacity even at 100,000 miles.
100D and P100D batteries do not reach the advertised capacity and show continued degradation beyond 50,000 miles.
The largest and most powerful batteries in Tesla cars tend to degrade more, likely due to the stress from high-performance demands.
Degradation patterns suggest that most capacity loss occurs early in the battery's life, with a leveling off later on.
Transcripts
welcome to Tesla info and today we're
going to look at battery degradation
taking the data we've collected from
thousands of cars and thousands and
thousands of data points we'll add some
bookmarks to the video so you can jump
to the cars you're interested in and
we're going to cover model 3 Model y
Model S model X and even some of the
older cars later on in the video it's
worth noting that we've taken the data
using the API and there are some issues
with that in terms of absolute accuracy
and whether the car BMS is calibrated or
the cells are balanced however we feel
that you know even though there might be
some absolute accuracies on every single
point the trend is still valid and we
can see sort of what's going on over
time so your batteries made up of lots
and lots of cells and Tesla make bigger
cells now than they used to or two
different sizes Model S and model X
still use the older size these are
combined together to create modules and
the modules are combined together to
make a battery pack which sits generally
in the floor of the car and in some
cases is starting to become a Str a
structural component of the car the
first battery we're going to look at is
a model 3 long range and part of the
thing with Tesla is the battery has
actually changed over the years
including uh by factoring so we're just
going to focus on 2018 to start with
these batteries started with with around
74 KW hours as we can see and by 50,000
mil miles most of the cars are reporting
on average a drop to about 69 kwatt
hours so that's around a 6 and 1 12%
drop by the time it's got to 100,000 mil
that drop has only gone down to uh 67 KW
hours so a 9.5 kwatt hour drop and a lot
of people say that the car batteries
actually lose most of their uh
degradation happens in the first part of
its life if we now take a look at cars
built in 2020
um we get pretty much exactly the same
results what we see is the batteries
start around 74 KW hours by the time
they've hit around 50,000 Mi it's
dropped to 69 KW hours so the first
chunk of the depreciation has occurred
and by the time it's hit 100,000
miles it's last a couple more kilowatt
hours but it's you know really started
to level off as we can
see to 2022 however we do start to see a
diversion of the data and there aren't
thousands of data points here so you
know up to a point we need to be mindful
of what we're looking at what we have
however detected looking at this data is
there seems to be two different cohorts
of batteries some which have depreciated
more than others some have dropped to
about 73 While others only dropped to 76
kilowatt hours and by 100 Kil 100,000
miles is down to 70 and 74 and when we
go and start looking at the uh models
and where they've been built it seems
that the China built LG Chen batteries
have only dropping have only dropped
about 6% whereas the Freemont Panasonic
batteries are down by
11% we can't we find that quite a
significant variation certainly
something that you deserves more looking
into
really if we switch to the standard
range cars then we can see even more
sort of like different cohorts of
batteries uh linked to different years
so we're just going to start with the
early 2019 batteries
first now there's quite a wide scatter
on the data points here quite a big
range from car to car um which is you
know goes back to the point we made
about you know the accuracy using the
data but what we actually see is after
there's you know only a 4% drop in the
battery capacity by 50,000 miles there's
virally no degradation that you can you
can talk of you know even cars up to
120,000 MI are still you know recording
44 you know kilowatt hours and certainly
by 100,000 it's still up around the 46
kwatt
Mark if we now jump to a later year so
this time we're going to take a look at
20121 um again we see the two different
Co cohorts of data um but actually both
cohorts are reasonably good and you know
the 53 kilowatt is ones 10 to drop to 51
by 50,000 Mi the 57 to 56 and the the
higher range is actually the
introduction of the lfp batteries that
we see um initially from the China
Factory either way both these batteries
seem to Fair really well um with pretty
low degradation at 50,000
mil so what we'll do now is we'll switch
to 2022 and we'll take a look at what
that data looks like and it's pretty
good it tends to start around 60
61 um it does drop about 5% to 58 kwatt
hours by 50,000 mil we haven't got any
data at 100,000 miles um and even if we
look at the 2023 batteries so these cars
have been worked pretty hard again it's
looking like it's losing about 5%
initially and then it seems to sort of
pretty much Plateau at that sort of
level um going
forwards
we we've also gone and had a look at the
performance models and we've actually
got the three and wide performance
models here and when you actually filter
down and have a look at individual year
um we're seeing a massive spread in the
um the capacity of these batteries we've
put up the long range in the top right
hand corner to to sort of compare um and
it's um it's really hard to draw any
conclusions that there was a 6 s
kilowatt hour spread between one car and
another um you know if you go back to
the 2020 values which we're seeing here
uh some are down as low as 62 KW hours
some are up still up at 72 K hours
that's a 10 K
spread what is probably worth noting
about the performance batteries is they
use the same us batteries usually the
bt42 battery which we saw earlier as
being worse than the LG chm
batteries we're now just going to have a
quick look at the model y um battery the
long range to start with um going back
and filtering and comparing it with the
model 3 long range and and in reality
we're getting very very similar results
as you pretty much expect there doesn't
seem to be anything about the the model
y long range which is causing to have
significantly different results to the
uh model 3 equivalent um which I think
is probably good news probably the most
noticeable thing we can see is the fact
on things like the 2022 model
the early degradation seems to be a
little steeper initially or quicker than
the model 3 equivalent um but it seems
to level off at the same level okay
we're now going to take a look at the
model S and model X fa lift from around
2021 and actually that's not good it's
overall it's an 11% drop at 50,000
miles if we split those results now
between the long range and the pled um
we'll see the long range on the the
model X at least um it seems to be
leveling off around 50,000 Mi at around
90 kwatt hours whereas if we switch to
the plade uh it seems to just keep going
down um you know 12% down at 50,000 Mi
and even the ones at 60,000
mil they're down to sort of 85 kilowatt
hours it's almost 15% down which is a
worry that said of course it's worth
remembering that these are pretty small
data sets you know there aren't that
many data points there but you know you
can see a definite Trend that's that's
heading downwards and it's probably a
reflection on the harder life the
battery has to do um in a played car
we're now going to step back in time a
little and look at the original model S
85d and for those who remember this was
the battery gate car um and there seems
to be two cohorts here um there's some
cars that still seem to hang on to 71
kwh hours of battery which is actually
pretty good cuz these only had 7677 to
start with and then there's a chunk that
seem to be down to 61 kwatt hours um
don't know whether this is battery gate
whether this is replacement batteries
who knows but there seems to be a marked
difference between two different uh two
different batteries going on
here the next battery we're going to
have a look at is the
90d and almost exactly the same thing's
Happening Here there are two cohorts of
batteries um a lot are holding on to the
high capacity of 73 KW there's a bunch
at 63 kwatts um now the 90d was
criticized originally for having a you
quite a fast early degradation but you
know at 50 or 100,000 miles it's still
holding on to you know a reasonable
amount more battery capacity than the
85d although not the 5 Kow hours you
might expect from the naming
convention
2 kwatt hours that's what five six miles
um it may made a difference between
getting to your destination or not I
think there's not a lot to choose
between the two and we'd be buying on
condition uh on cars they
sold next we're going to take a look at
the
75d um and this has been a quite a big
seller for Tesla over the years
primarily because it seems to be a good
price point um and it's remarkably flat
I mean it it it's never hit 75 kwatt
hours um it's always started around the
67 68 kwatt hour mark uh and we can see
some spous spurious data points up
around the 85 which we we presume are
actually replacement batteries um but
otherwise it is glacial the uh
degradation on these batteries once it
hits 50,000 mil it's down to 67 at
100,000 mil it seems to only drop to 66
kwatt hours on average which we think is
a remark arable uh feet really and a
very usable battery um for these
cars finally we're going to go back and
have a look at the 100 pack batteries in
the 100d and the
p100d pre the big facelift in around
21 um and none of these seem to have
reported battery capacity close to 100
kwatt hours other than you know in very
short bursts and we think these are
probably the replacement batteries um
which quickly degrade to around 92 93
kwatt hours or at least they report that
and at 50,000 Mi they're leveling out at
90 kwatt hours and In fairness to them
they don't lose an awful lot more over
the next 50,000 miles down to you know
an average of 88 kilowatt
hours but they seem to be a long way off
the the close to 100 kwatt hours that
they were originally meant to have and I
think this just reinforces the general
point about Tesla batteries most of the
degradation and certainly the reported
degradation using these sort of tools
happens pretty early on and that may
just be the way it's measured is part of
that you know Optimum temperatures and
so on May mean they never really uh
reveal their full capacity you know once
they're installed in the car and out in
the real
world and then the degradation actually
seems to level of quite a lot uh later
on the worst batteries seem to be the
biggest batteries and in the most
powerful cars and so you know I think
it's probably not rocket science to
assume that those batteries are under
more stress and certainly you know if
you if you launching a PL model at 2
seconds to 60 you can imagine that's
putting quite a strain on the battery
and that seems to uh be showing through
in the numbers anyway hope that's been
an interesting run through batteries and
what seems to be happening to them um
catch you next
time
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