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  1. R

    Some new data from research on Tesla model 3 cells

    My car (70D) I bought new in 2015, and it always had a 4.0 kWh buffer. I am not sure where the idea of a lower buffer of 2.4 came from but I think maybe the 60 kWh cars did have a smaller buffer. But the 70 cars always had 4.0 kWh. Is your battery the original? That is very little...
  2. R

    Some new data from research on Tesla model 3 cells

    I am not sure how TeslaMate derives those capacity numbers but they are incorrect. The 70D started at 68.88 kWh nominal full pack with a 4.0 kWh buffer. So usable new was 64.88 kWh. My verification of this is from TM-Spy which is CANBUS data, the same as SMT. However, rated range is calculated...
  3. R

    2020 Model S Long Range plus - RANGE

    Actually, I don't think your range numbers sound that bad if you consider everything. Did the 2020 also come with 19" rims? Usually the rating of 402 would be with the smaller wheels, so with the 21" you would expect less than that. And if you average efficiency is 330 Wh/mi, you are doing...
  4. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    There is an easy way to get a very good estimate of your battery kWh. It is a sticky thread in the M3 battery and charging forum. Maybe that is how you got your estimate, but if not, you could check that out.
  5. R

    2024 Plaid rated range displayed is 347 vs EPA 359

    It seems like if it was a mistake or bug they would have fixed it right away. If your window sticker says 359 that is most likely correct. Maybe Tesla just made the displayed miles more in line with what typical owners would experience driving. I don't think Tesla has to make the display...
  6. R

    2024 Plaid rated range displayed is 347 vs EPA 359

    The old Teslas originally used a fixed buffer of 4 kWh. Now I believe they use a value that can vary with total battery capacity. I think it is now 4.5 % of nominal full pack. That would be about 4.36 kWh for your 96.9 kWh battery. What is your CANBUS buffer reading? I know this is not...
  7. R

    2024 Plaid rated range displayed is 347 vs EPA 359

    Any updates on this situation? According to Tesla, you have about 3.3% degradation to your battery, which of course you know is BS. I think there is a health check feature in your car that you can use to check your battery. I'm curious if you have tried that to see what it says.
  8. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    Did you get a reman or new pack? Because 230 miles was the full rated miles for an original S70 when new. So whatever you got, that's pretty good.
  9. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    Did you have any warning signs prior to your failure? How much degradation did your original battery have prior to the failure? What did Tesla guarantee for capacity on the refurb pack?
  10. R

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

    I agree with you here. I should have been more precise and said they can adjust the displayed range.
  11. R

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

    It's not just the 2024 model Y that is showing less than the "advertised" EPA estimate. People are claiming that the 2024 Model S Plaid is showing only 347 miles at 100% charge with an advertised range estimate of 359 miles. When Tesla was asked about this they said "it is normal to lose...
  12. R

    2024 Plaid rated range displayed is 347 vs EPA 359

    Have you asked Tesla about this? They should have some kind of response for such a big discrepancy.
  13. R

    Clarity around CAC imbalances, voltage imbalances, bad bricks, and battery warranty - 2015 90D

    I think the bottom line is that CAC is useful for comparing cell to cell, but not the best method for determining nominal capacity for reasons like you mentioned.
  14. R

    Clarity around CAC imbalances, voltage imbalances, bad bricks, and battery warranty - 2015 90D

    New nominal full pack for an S 70 was 68.88 kWh. So what is being labelled as Usable (new) and Usable (now) in you chart is incorrect. Those chart values are the same as SMT nominal full pack values. The actual usable does not include the buffer so those readings should be 4.0 kWh less than...
  15. R

    Vendor Tesla Model S Battery Extended Service Plans from 057 Technology

    I think this represents how most people feel about the situation here. I came extremely close to purchasing a service plan since my car was a perfect candidate for one, and I really liked the idea of having the BMD. But I'm just very lucky I didn't go through with it. I know now that if I...
  16. R

    My car hit a new low, -1.2%SOC

    Oh yeah, I totally get that! But once you were home and safely plugged in, you could have taken SMT readings correct? I think you said have SMT capability.
  17. R

    My car hit a new low, -1.2%SOC

    I don't know what the blue snowflake does to the numbers since I never see cold temperatures like that. You were showing 0% on the battery, so I am wondering what it showed for miles if you switched it to miles? The graph showed -1.2% which is about -3.7 miles for you. It would have been...
  18. R

    Error in power consumption or battery issue?

    According to the Tesla website, the plaid with 21" has an EPA range of 320 miles which equals about 515 km. Do you know what standard they use in your car to get 560 km (348 miles) for full range? That's a pretty big difference. Is that a realistic value under typical driving conditions?
  19. R

    Error in power consumption or battery issue?

    Your max full pack was 98.4 and currently is at 97.5. How much change have you seen in the corresponding full rated range in miles for those two cases? Do you still see the full rated range?
  20. R

    Gen 1 UMC, 2021 Model S

    They must have made some of the Gen 1 cables better than others. I have used mine every day for over 8 years and always charge at 40 amps. I can barely feel it warm at the end of charging. Maybe I just got lucky in that regard.
  21. R

    70D 2015/16 range on original battery

    Your degradation over time looks pretty good. However, your mileage of 276 is not consistent with EPA rating of 240 mileage when new, as the post above states. Also, Europe had their own system (NEDC?) which was different than used in the U.S. If you want to compare your car's absolute...
  22. R

    2018 Tesla model 3 performance range drop

    That's less than 2% degradation in 3 years! Are you trying to challenge @KenC?
  23. R

    Some new data from research on Tesla model 3 cells

    For the MS cars, SMT calculates SOC as (Nominal Remain - Buffer)/(Nominal Full - Buffer). For this case that would be (53.8 -4.0)/(73.7 - 4.0). This equals 71.449 or 71.4, which matches the SMT readout. However, for SMT SOC to match the car's display, the proper equation should be: (Ideal...
  24. R

    Some new data from research on Tesla model 3 cells

    Other than the fixed buffer size (4.0 kWh), the old MS cars calculate the SOC % and full pack value the same as the M3 does. Unless they did something different for the performance models, which I don't think so but I guess it's possible.
  25. R

    Model S 2018 worth keeping before battery warranty expires?

    The 75D was rated at 259 miles EPA when new. So 80% should have been around 207 miles instead of 226. If it is now at 185 miles at 80%, that is about 11% battery degradation from new EPA value, which is pretty normal.
  26. R

    HV Battery Health Test Confusion

    The BMS determines the battery kWh capacity and it is given as the Nominal Full Pack value from the CAN bus reading. The energy screen calculation gives you the same value, although because it contains uncertainty errors, it may be slightly different than the SMT reading. So the energy screen...
  27. R

    Acceptable cell imbalance range?

    Why is your HV battery showing 2.68 kW? That seems like a lot if your car is just sitting there. Your DC-DC input power is much lower at 320 W.
  28. R

    HV Battery Health Test Confusion

    If you have a Standard Range Plus then you should have shown about 240 miles for a 100% charge when the car was new. Is that what you saw? If you only showed about 220 miles when the car was new, you have a Standard Range where a certain percentage of your battery capacity was locked out, and...
  29. R

    Has your car shut down before it hits zero?

    Are those fairly recent events? I'm just wondering if you used to be able to get down close to zero in previous years, and now for some reason it won't do it.
  30. R

    Acceptable cell imbalance range?

    Besides what others have said here, you show you were only charged to 20%. Many people have shown their cars to have large cell imbalances at low SOC, but it improves significantly at higher SOC. I don't know what exactly that means because my car shows about the same cell imbalance regardless...
  31. R

    My 2015 is dropping around 40 miles of charge within a minute or two of unplugging from a charger.

    I wouldn't say using % is better, but rather a personal choice. I actually prefer using miles because it gives me more information. But I can see the argument for using %, and I think most people probably do that. I wish they would give the option to display both at the same time, and then I...
  32. R

    Acceptable cell imbalance range?

    My 2015 70D is also showing about 20-25 mv balance, from an original of about 4 mv. My rated range is now down to about 195 miles, with about 162k miles on the car.
  33. R

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

    You would have to continue driving after the car reaches 0% SOC to reach the EPA miles, and even then there is no guarantee you would get all the EPA miles if you continue to drive below 0%. There are many cases of people being stranded on the side of the road for trying this. So yes, it is...
  34. R

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

    He might have been talking about the energy screen, in which case the screen is exaggerating your available miles. Because if you are driving at EPA energy efficiency, the screen will tell you that you will achieve rated miles, when in fact, you are getting 95.5% of that. Whether that...
  35. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    You are mixing up two different things here. The indicated range of 265 and 245 you mention is the rated range for the car and is the number displayed next to the battery icon. These values correspond to the amount of energy available in the battery as determined by the BMS, which is normally...
  36. R

    Vendor Free Diagnostics - Maximum Charge Level Reduced

    What data will you access to, and is it anything different than what the owner can already observe?
  37. R

    Max miles decrease 223 miles at 80%

    The full rated value is calculated but I'm not sure how SMT does it. I think your nominal full pack is right on the cusp of the degradation threshold of 76 kWh. Do you remember the maximum NFP you have seen? @AlanSubie4Life could verify if that is the case. If your rated constant is 245...
  38. R

    Max miles decrease 223 miles at 80%

    Oh no!! Do you know what caused the battery failure?
  39. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    Based on your numbers I would guess you somehow got a 75kWh battery by mistake. That's the only thing that seems possible to me. For a while, I think they were selling 70s with 75 kWh batteries that could be unlocked to a 75 for a price.
  40. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    That's something! I have never heard anything like that before. The S 70 was rated for 230 miles when new (70D was 240 rated miles). So your battery started out with way more than rated range and has hardly degraded at all. Do you have any SMT data you can show? I'd be curious to see what the...
  41. R

    Are you still on the original battery pack with your 2012-2015 Model S?

    2015 70D, original pack, original owner. Over 160k miles and almost no supercharging. Currently have 197 miles rated range remaining from spec new of 240 miles, which equals 18% degradation. Maybe I need to start supercharging.
  42. R

    2015 Model S 70D battery questions

    Yes, original battery and owner. I don't use supercharging because I mostly drive locally, and can just charge at home overnight. It's very convenient for me. When I do drive on the freeway I can usually get my rated range but that is at about 265 Wh/m. I never got the full 240 miles rated...
  43. R

    2015 Model S 70D battery questions

    Theoretically, supercharging can cause shortened lifetime of the battery, but it doesn't necessarily translate to faster degradation of rated range miles. My 2015 70D is the same year as yours and I don't use supercharging at all, and do all my charging at home. I have just under 200 miles of...
  44. R

    New Study Shows No Adverse Effects From Supercharging

    I'm glad you said that. That's why studies like the one at the beginning of this thread are meaningless. You can't make a causal correlation between rated range degradation and battery health, as your case shows. What was the failure mechanism in your case? Did SMT show anything at all right...
  45. R

    Where's the degradation?

    Almost certainly no degradation, not the use of the hidden 5kWh. Your case makes a good argument for getting a new battery instead of a reman.
  46. R

    7 years later what is your 100% on your 85kWh battery?

    What is your nominal full pack reading and your cell voltage variation? I have about 200 rated miles on my car but it is a 70D and has about 160k miles. My nominal full pack is just about 57.0 kWh. My cell voltage variation from TM-spy is about 25 mv.
  47. R

    Is there a thread dedicated to high mileage (200K+ miles) S's?

    I was wondering the same thing although I don't have nearly as many miles as you do. I have 160k miles and have been out of warranty for about 4 months now. My degradation is about 17%, but I haven't had any issues with my battery or drive unit so far.
  48. R

    Pricing increase on both new and reman Tesla replacement packs

    What is the difference between those two part numbers, and why would your part number not exist anymore?
  49. R

    Lifetime Average Wh/mi

    What Wh/mi gives you rated miles matching driven miles?