Car: 2022 Tesla Model 3 RWD with LFP battery. Scan My Tesla says 60.5 kWh was the nominal full pack when new, 58.4 kWh nominal full pack currently after a little more than a year.
Below are some voltages read by Scan My Tesla. These may be of interest due to talk about the relatively flat voltage curve of LFP batteries.
The "Pack V" is the pack voltage.
The "CVmax" and "CVmin" are the cell maximum and minimum voltages. Note that while the cells appear to be very balanced during most of the state of charge range, they diverge when fully charged or at low states of charge.
The "SoC%" is the state of charge.
The "Nrem" and "Urem" are nominal and usable remaining; Urem is lower by the amount of the buffer (which seems to be 2.6 kWh during this time).
The "After" column indicates where it is after charging (C), driving (D), and/or parking for a while (P). Where there is a number after the D, it indicates the same drive (i.e. D1 means immediately after drive #1, while D1,P means after bring parked for a while after drive #1).
One thing that is noticeable is that the pack and cell voltages at 84.3%, 76.4%, and 68.8% after the car has been parked for a while after driving are the same within the resolution of what Scan My Tesla reads. Also, the readings at 92.8% are only barely different.
Below are some voltages read by Scan My Tesla. These may be of interest due to talk about the relatively flat voltage curve of LFP batteries.
The "Pack V" is the pack voltage.
The "CVmax" and "CVmin" are the cell maximum and minimum voltages. Note that while the cells appear to be very balanced during most of the state of charge range, they diverge when fully charged or at low states of charge.
The "SoC%" is the state of charge.
The "Nrem" and "Urem" are nominal and usable remaining; Urem is lower by the amount of the buffer (which seems to be 2.6 kWh during this time).
The "After" column indicates where it is after charging (C), driving (D), and/or parking for a while (P). Where there is a number after the D, it indicates the same drive (i.e. D1 means immediately after drive #1, while D1,P means after bring parked for a while after drive #1).
Code:
Pack V CVmax CVmin SoC% NRem URem After
381 3.544 3.526 101 59.0 56.4 C,P
359 3.318 3.314 93.0 54.5 51.9 D3
359 3.334 3.330 92.8 54.4 51.8 D3,P
359 3.326 3.322 84.5 49.7 47.1 D4
359 3.332 3.330 84.3 49.6 47.0 D4,P
358 3.322 3.320 76.5 45.3 42.6 D5
359 3.332 3.330 76.4 45.2 42.6 D5,P
357 3.316 3.310 68.8 41.0 38.4 D6
359 3.332 3.330 68.8 41.0 38.4 D6,P
360 3.338 3.334 68.8 41.0 38.4 C,P
354 3.282 3.278 46.8 28.7 26.1 D
354 3.280 3.276 40.1 25.0 22.4 D1
355 3.290 3.286 39.9 24.9 22.3 D1,P
356 3.302 3.300 33.8 21.5 18.9 C,P
352 3.268 3.262 28.5 18.5 15.9 D2
355 3.286 3.284 28.3 18.4 15.8 D2,P
354 3.286 3.284 27.6 18.0 15.4 D
350 3.246 3.238 17.3 12.3 9.63 D
350 3.244 3.236 15.7 11.4 8.75 D
347 3.222 3.210 11.0 8.74 6.11 DOne thing that is noticeable is that the pack and cell voltages at 84.3%, 76.4%, and 68.8% after the car has been parked for a while after driving are the same within the resolution of what Scan My Tesla reads. Also, the readings at 92.8% are only barely different.
