Hey @Sktesla
A couple of things to unpack here, maybe because of wrong assumptions or because most people don’t understand Spanisch here:
- Full Pack When New = Fixed value that only serves to identify the battery pack. You will see this readout in every CATL 6L LFP60 battery pack. This doesn’t mean that this pack came with that capacity from the factory. Again…only a marker to identify the pack in the rough area of the real capacity of the pack when it was new.
- Nominal Full Pack = BMS calculation of the current available capacity from 100% SoC to -4,5%, so it includes the Energy Buffer below 0%. The Youtuber also correctly points it out, that this value is more important than the Full Pack When New.
- Energy Buffer = Key point here is that the Energy Buffer in the CATL LFP Packs is variable. If you charge this one frequently to 100% it will reduce the Energy Buffer since it is „more sure“ of its capacity and therefore allows more capacity to be used between 100% and 0%. Ideally the LFP60 can reduce the Energy Buffer to 2,8kWh if I remember correctly, resulting in 59kwh max to be usable between 100% and 0%.
The usable energy should include the buffer. You dont see it below 0%, but it is there, without being able to rely on it. This is a frequent discussion.
This battery pack can ideally be charged up to 62kWh, but most stop at 61,#kWh including Buffer.
Seen here in the EPA test results → System End State of Charge Watt-hours:
WLPT Consumption is calculated with energy drawn from the socket, to give you a real estimate of your running costs. Charging losses in the Model 3 and Y range from 8% to 13%, but in this calculation 12,4% works best.
157 - 12,4% = 137,5Wh/km
62000Wh / 137,5Wh/km = 451km (455km declared on 20")
True, but with a smaller energy buffer you can increase the range with 200Wh/km to almost 300km. The MY RWD might be more efficient than 200Wh/km on 19" wheels and get you even further in real life.