there is a thread on this.
I just took delivery of a 2021 Model 3 SR+. How can I know for certain what battery type I have? LFP or NCA? Where can I find out battery details of my car? Is there a setting in car, app, Tesla account?
teslamotorsclub.com
see below from Tesla's support page
View attachment 833133
LFP = Lithium Iron Phosphate
Recommended 'daily' maximum charge up to 100%. Tesla says this battery can be charged up to 100% without risk of battery degrade.
RWD 'daily' max range = 100% battery = 491km
RWD 'trip' max range (for occasional long trips) = 100% battery = 491km
NCA = Lithium 'Nickel Cobalt Aluminum' oxides
Recommended 'daily' maximum charge up to 90% to ensure battery does not degrade over time
LR 'daily' max range = 602km * 90% = 542km
LR 'trip' max range (for occasional long trips) = 100% battery = 602km
P 'daily' max range = 547km * 90% = 493km
P 'trip' max range (for occasional long trips) = 100% battery = 547km
Of course above not real world ranges numbers.
from the articles it seems that the LFP batteries have less density, meaning it require more space under the floor than NCA batteries and hence Tesla has not found a way to fit larger kWh size (>75kWh) LFP batteries in LR and P yet.