2018 Model 3 LR RWD with only 64KWh battery?

[AlanSubie4Life]

I have a similar gripe with my P3D+. Not quite as bad as this but even starting off at 100% and pulling in at “1%” my max used hasn’t even touched 70kWh.

OTOH, It will go all the way up to “299mi” at full charge.

I think you have a 2020 P3D+.

Was that 100% to 1% in one continuous drive? If not, you could lose significant energy when the car sits.

You would expect to see (assuming you have 77.6kWh = 260Wh/rmi*299rmi; you may have more):

77.6kWh*0.955 = 74.1kWh (buffer is 4.5%, below 0%)
You use 0.99 of that:
0.99*74.1kWh=73.4kWh
The trip meter always shows a 1-2% loss:
0.98*73.4kWh = 71.9kWh

So the max I would expect you would see on the trip meter would be about 72-73kWh, for a brand new car. You saw less than 70kWh, which implies to me that the car must have spent some time sitting and losing energy. Could also be some error on the % used - rated miles would give better accuracy.

However, this method of tracking capacity is completely different from what the OP was observing. It is definitely well worth doing and capturing the data though - it is one of the only ways to capture degradation over time - you can always go back to your pictures and see how much energy you were able to pull out of your new battery, and compare.

 

[Msjulie]

Maybe one of the affected vehicles from this recall? Vehicle manufactured between May and late August?

https://static.nhtsa.gov/odi/tsbs/2018/MC-10148848-9999.pdf

My car manufacture date is in this range, but how does an owner actually know the issue is or is not effecting their car? Op's battery seems low but how do non-Tesla folks really know?

 

[AlanSubie4Life]

My car manufacture date is in this range, but how does an owner actually know the issue is or is not effecting their car? Op's battery seems low but how do non-Tesla folks really know?

My recollection is that Tesla reached out to affected owners. Not sure if there are any people here who were affected who could chime in with their experience.

 

[ElectricIAC]

Hmm...could be interesting. I’ll have to do a “past zero” test some time to see if my BMS is still fuzzy.

 

[john silvester]

I have a 2018 Model 3 LR RWD. It gets only around 270 miles when I charge it up to 100%. When I take the listed effective range in the Energy graph, multiply it with the Wh/mi value and then divide it by the charge percent of the battery I always get to a battery of 64KWh.
Last night I charged it from 2% to 99% and according to TeslaFi and my smart power meter it used 64KWh.
With the new firmware 2020.4.1 this seems to be bumped up to 68KWh (The car now shows 249Wh/mi and a range of 276).
I drove the car 20000 miles so far. I have a hard time to believe this is normal battery degradation, especially since it dropped suddenly by a few dozen miles in the middle of last year.

Any idea why I don't see a higher capacity of my battery? Just bad luck? Or were there early 2018 Models (I got mine in July 2018) which had slightly smaller batteries?

Thanks

As my 2018 M3 LR RWD with 15,700 mi manufactured July 2018 is experiencing the same battery degradation as urs (ie64k) I was wondering how u & Tesla resolved it enlight of the recall notice for lr batteries manufactured may - august 2018. Would appreciate any info u could. Meeting with tech adviser to discuss further results of there initial battery ck.

 

[ElectricIAC]

As my 2018 M3 LR RWD with 15,700 mi manufactured July 2018 is experiencing the same battery degradation as urs (ie64k) I was wondering how u & Tesla resolved it enlight of the recall notice for lr batteries manufactured may - august 2018. Would appreciate any info u could. Meeting with tech adviser to discuss further results of there initial battery ck.

Based on our P3D degrading down to 65kWh usable down from around 72kW initial this seems normal for this pack.

 

[AlanSubie4Life]

72kW initial

>76kWh initial, probably 78kWh.

Unless it was delivered with 294 rated miles rather than the typical 310.

But yeah, this is normal, on the high (loss) side.

 

[ElectricIAC]

>76kWh initial, probably 78kWh.

Unless it was delivered with 294 rated miles rather than the typical 310.

But yeah, this is normal, on the high (loss) side.

I think it was 293 before they changed ratings, then was showing 301-304 for a little while before starting to degrade.

 

[AlanSubie4Life]

I think it was 293 before they changed ratings, then was showing 301-304 for a little while before starting to degrade.

Guess I am confused about the year then. Sounds like you had a 2020, I guess.

In which case, yeah, that’s an unfortunate way to start out! Not great. But, on the upside, you’re only down 11% or so from where you started. Haha.

 

[ElectricIAC]

Guess I am confused about the year then. Sounds like you had a 2020, I guess.

In which case, yeah, that’s an unfortunate way to start out! Not great. But, on the upside, you’re only down 11% or so from where you started. Haha.

Sold it recently. 2018 with PUP.

 

[AlanSubie4Life]

Sold it recently. 2018 with PUP.

Oh ok. They never changed the rating on the 2018 Performance. So sounds like your car recovered some (the estimate recovered, not the capacity) to a peak of 304mi or whatever.

 

[KenC]

As my 2018 M3 LR RWD with 15,700 mi manufactured July 2018 is experiencing the same battery degradation as urs (ie64k) I was wondering how u & Tesla resolved it enlight of the recall notice for lr batteries manufactured may - august 2018. Would appreciate any info u could. Meeting with tech adviser to discuss further results of there initial battery ck.

I remember that recall; I think they check your VIN to determine whether you got a battery with fewer cells wired in a pack.

 

[john silvester]

I have a 2018 Model 3 LR RWD. It gets only around 270 miles when I charge it up to 100%. When I take the listed effective range in the Energy graph, multiply it with the Wh/mi value and then divide it by the charge percent of the battery I always get to a battery of 64KWh.
Last night I charged it from 2% to 99% and according to TeslaFi and my smart power meter it used 64KWh.
With the new firmware 2020.4.1 this seems to be bumped up to 68KWh (The car now shows 249Wh/mi and a range of 276).
I drove the car 20000 miles so far. I have a hard time to believe this is normal battery degradation, especially since it dropped suddenly by a few dozen miles in the middle of last year.

Any idea why I don't see a higher capacity of my battery? Just bad luck? Or were there early 2018 Models (I got mine in July 2018) which had slightly smaller batteries?

Thanks

I have almost exactly the same battery degradation experience with my Tesla M3 LR RWD purchased in august of 2018 and having a total of 15,700 mi. Using the same formula u used I came up with a battery capacity of 64 kWh. 2 recent BMS recallibrations (<10% to 100%) made no difference. Range was and is coming in at - 247mi/90% projecting out to - 268-270/100%. Tesla service has so far said the battery is healthy. Have follow call with Tesla rep tomorrow. WOULD B VERY INTERESTED IN SHARING INFO/explorations/research/others experiences on this. The exact same set circumstances & experiences r at best more than a bit strange. Let me know.

 

[AlanSubie4Life]

I have almost exactly the same battery degradation experience with my Tesla M3 LR RWD purchased in august of 2018 and having a total of 15,700 mi. Using the same formula u used I came up with a battery capacity of 64 kWh. 2 recent BMS recallibrations (<10% to 100%) made no difference. Range was and is coming in at - 247mi/90% projecting out to - 268-270/100%. Tesla service has so far said the battery is healthy. Have follow call with Tesla rep tomorrow. WOULD B VERY INTERESTED IN SHARING INFO/explorations/research/others experiences on this. The exact same set circumstances & experiences r at best more than a bit strange. Let me know.

Seems fine. No issues.

 

[jjrandorin]

I have almost exactly the same battery degradation experience with my Tesla M3 LR RWD purchased in august of 2018 and having a total of 15,700 mi. Using the same formula u used I came up with a battery capacity of 64 kWh. 2 recent BMS recallibrations (<10% to 100%) made no difference. Range was and is coming in at - 247mi/90% projecting out to - 268-270/100%. Tesla service has so far said the battery is healthy. Have follow call with Tesla rep tomorrow. WOULD B VERY INTERESTED IN SHARING INFO/explorations/research/others experiences on this. The exact same set circumstances & experiences r at best more than a bit strange. Let me know.

The person you are quoting was on TMC (this site) for exactly 1 day, from account creation to making that post, to disappearing. You will not be receiving an answer from them. For "more experiences",

Please see the 260 page thread about battery health and range:

Range Loss Over Time, What Can Be Expected, Efficiency, How to Maintain Battery Health

i bought my model 3 in aug 2018. After the software upgrade I only got 316 miles when charged to 100%. Last night I got only 312 miles from 5% SOC to 100%. A 4% degradation within 10 months? Have others degraded similarly?

teslamotorsclub.com

That has plenty of feedback (260 pages worth) on basically this same topic.