TeslaFi - Battery Degradation Reports (upload your data)

[jedi2b]

This google sheet has a nice chart of battery information. See 'Chart' tab.
You can pretty easily fill out the form using the TeslaFI 'Battery Report' history. I did that for my son's car below.
"Tesla Battery Survey"
Tesla Battery Survey

Excellent idea!
Would it be possible to filter based on car model?

 

[scottf200]

Excellent idea!
Would it be possible to filter based on car model?

Excellent question for @Troy . I was thinking there would be the same thing because the original form/profile ask what car you are putting data in for so it would seem like you'd want to compare your data to a similar car. i.e. LR TM3 AWD

Tesla Battery Survey

 

[Troy]

Hi @jedi2b and @scottf200,

Adding a way to filter by car model is technically possible but I think it would cause misinterpretations. Let me explain: Let's take Model 3 SR+ vs Model 3 LR AWD. Both cars have the same 2170 cells and the same battery thermal management. There is no reason for one model to degrade differently. However, a while ago Tesla changed the displayed maximum range of SR+ from 240 mi to 250 miles. This change applied to all existing SR+ cars too.

These types of changes mess things up in the survey for certain models. There are lots of errors tied to specific models because of the changes Tesla keeps making. Therefore even though this survey is good at providing an overall idea of what kind of degradation to expect, it is not good at comparisons that require precision.

Btw, there was an error with the red trendline. I've fixed that.

 

[scottf200]

Hi @jedi2b and @scottf200,

Adding a way to filter by car model is technically possible but I think it would cause misinterpretations. Let me explain: Let's take Model 3 SR+ vs Model 3 LR AWD. Both cars have the same 2170 cells and the same battery thermal management. There is no reason for one model to degrade differently. However, a while ago Tesla changed the displayed maximum range of SR+ from 240 mi to 250 miles. This change applied to all existing SR+ cars too.

These types of changes mess things up in the survey for certain models. There are lots of errors tied to specific models because of the changes Tesla keeps making. Therefore even though this survey is good at providing an overall idea of what kind of degradation to expect, it is not good at comparisons that require precision.

Btw, there was an error with the red trendline. I've fixed that.

I definitely don't think that is a very good reason not to allow the user to decide if they want to use that feature to look at their specific model TM3 vs X/S and TM3 LR vs SR vs TMS/X 100D vs LR. It is our data and time we are providing, please so let us decide.

Heck the 3 and S/X aren't even using the same cells.

There is also a significant bias with the data since people going thru the trouble of entering the form data may be questioning their battery capacity ... meaning people who are very happy with their battery may not bother entering the data.
So If you make more flexible and useful the more people may use it.

 

[arch4life]

@scottf200 , I did something similar to what you did for the survey data and plotted my data points from teslafi against the chart..

Thought this would be interesting to see to understand relative to all reported data I have access to.

 

[scottf200]

@scottf200 , I did something similar to what you did for the survey data and plotted my data points from teslafi against the chart..
Thought this would be interesting to see to understand relative to all reported data I have access to.

Can I assume that for that exercise that you copied the G-sheet and then cut-n-pasted your data from TeslaFI vs form 15 at a time?

 

[arch4life]

@scottf200 I just ended up downloading the file and re-plotting the data myself because I wanted to make sure I understood what was being shown. but yes, I used the teslafi range assumptions.

 

[scottf200]

TeslaFI has a new BETA battery report. I suspect others have requested a comparison to similiar models as their own. Below is a support ticket I opened a week ago. They must have had this in the planning for a while.
Lot of tweaking on the settings page. I'm still figuring that out.

TeslaFI update today: Beta version of the Battery Report including fleet data can be found at Charges->Battery Report Beta. Battery Degradation Report For the fleet? / General / TeslaFi

________________________ my support ticket -- I forget whose product/graph that is below ________________________________

Feature to compare battery to other similar models
scottf200 1 week ago • 0
The below would be a *FANTASTIC* feature for TeslaFI. You have a LOT of cars in the fleet with a wide variety of locations.

Would be nice for my son to compare his TM3 LR AWD to other LR AWDs. For me my X 100D to other X 100Ds (not LR model X tho).

Below appears to be from an iOS app: This app compares your car's battery health to other cars

 

[AlanSubie4Life]

Lot of tweaking on the settings page. I'm still figuring that out.

Cool. Definitely post another picture once you find a way to get a larger sample size of vehicles for the "fleet" average (currently appears to only be 3).

 

[morrisdl]

It only matched me with 1 one other P85 with >100K miles. Im winning! ;-)
Our annual mileage and and battery degradation are pretty liner (so far).n
SO, In 10 years we would have 350K miles on the odo, and a usable range of only 100-140 miles.

 

[Bigriver]

Here is what I get for my LR AWD Model 3 at about 15,000 miles. In the settings I specified to use charges at least 50% and temperature at time of charging within 20 F of my temp at charging.

I also did the same thing for my model X, but it only gave me a very few matches.

 

[Rexjamo]

Here's my beta battery report. Looks like I'm bottom of the class. At this rate I'll get a new battery in less than a year!

 

[Simavon]

2019 Model LR AWD. Usually charged to 80% at night, and usually not below 45% daily. Some supercharges but none since I started logging.

 

[scottf200]

My son's 2018 TM3 LR AWD.
Data and settings of:
a) +/- 999 miles,
b) >= 79% SOC,
c) 20F (i.e. +/- 10F)

 

[HostileHarry]

2018, Long Range, AWD, 25k miles

 

[Bigriver]

My son's 2018 TM3 LR AWD.
Data and settings of:
a) +/- 999 miles,
b) >= 79% SOC,
c) 20F (i.e. +/- 10F)

I’m curious how your son’s model 3 estimated full range is looking, 5 months later? It is one that has stuck in my mind as it was particularly concerning as it was relatively stable until it tanked.

 

[scottf200]

I’m curious how your son’s model 3 estimated full range is looking, 5 months later? It is one that has stuck in my mind as it was particularly concerning as it was relatively stable until it tanked.

Thank you for your follow up and curiosity. It has creep up some but still below average. He is not putting on 100+ miles per day for work in the past couple month tho (working from home). Set SOC to 50% for much of that. Aside: the +/- 999 max was changed recently to +/- 2000 in TeslaFI but that didn't seem to add any more data points per the settings screen display of other comparables. He/We are disappointed but not mad I would say. He does take good care of the battery and only superchargers a couple of modest roadtrips per year. As long as it stays steady then his is in OK shape as the Model 3s charger fast at superchargers. I don't think he has even had access to a v3 supercharger so far. He charges at 16a each night typically.

 

[HostileHarry]

My range loss continues to mount... @scottf200 your son's isn't too far off of mine.

 

[hcdavis3]

That looks terrible. Hope you get some resolution.

 

[YisSerL]

Mine is kind of terrible too.