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SMT: Nominal Full Pack tracking
- Thread starter benyl
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- battery scan my tesla
A 2022 RWD with 60.5 FPWN is most probably a LFP with 272 miles EPA range(437 km).
251 mi = 404 km.
It would say that it is nothing to worry about and the car has quite few miles so the range might increase by cycles that help the BMS
Charged to 100% last night (showing 101% for some reason) and the nominal remaining is higher than the nominal full pack.
I always have got 0.3-0.5kWh more at full charge than the NFP.
But as we said, some cycles will probably up the capacity slightly, and you have nothing to worry about.
When the nominal remaining is hoghwr than the Nominal full pack, the SOC shows 101%.
We can hope your NFP increase after this.
AlanSubie4Life
Efficiency Obsessed Member
Not sure where this info came from. Not aware of any such Tesla vehicle (the options for SR/SR+/RWD/LFP/NCA are 220,240, 250, 262, 263, and 272, (I think there was a temporary 253 as well instead of 262) and for larger packs, 299,304,310,315,322,325,353,358 - and some additional values for weird European LG packs!). As @AAKEE said, this is a 272-mile vehicle.
2022 Tesla Model 3 RWD
Fuel Economy of the 2022 Tesla Model 3 RWD. Compare the gas mileage and greenhouse gas emissions of the 2022 Tesla Model 3 RWD side-by-side with other cars and trucks
fueleconomy.gov
Anyway seems like with SMT you now have a handle on it. Seems slightly lower than I would expect for an LFP of this age but honestly I don’t have a good grasp of overall info - plots above seem to indicate relatively normal, though they are a bit confusing on the starting values (looks to me to be a mix of different packs in that plot - not surprising with both 55.1kWh LFP and 60.5kWh LFP FPWN packs out there, and who knows what is happening in Europe, where it is the Wild West with no info). Also there were some initial software versions using a different constant and some other odd treatments of the buffer, as I recall (253/262 issue), which may have corrupted the data.
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Did I miss something about LFP batteries? Is 94mV imbalance normal? And is the usable voltage range for LFPs different than Nickel-based batteries? 101% at 3.4Vc is low, compared to Nickel, right, where 4.2Vc for 100% is norm, right?
LFP is lov voltage cells.
3.6 V is the max voltage, end of Discharge.
Nominal voltage 3.2V
Minimum voltage 2.5V, I think.
As soon as not charging to 3.6V, and with low load the voltage drop to 3.35-3.4V
The voltage curve is very flat though.
Further update for those interested, a couple or full charges later and pack capacity seems to be increasing. The buffer also seems to vary quite wildly.
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AlanSubie4Life
Efficiency Obsessed Member
Do we know how Tesla handles the variable buffer to the displayed range?
Do the displayed range reduce with increased buffer or do the “constant” reduce and instead including the whole capacity “as usual” at 100% SOC ?
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