There probably is a code in the registratipn papers(at least it is inside EU),So how do I check this up in the car? Btw It’s the 2021 SR+ with a WLTP of 448, and yes it used to show around 420/430 while at 100%. I charged it to a 100% this night and now it shows 368km as full
E1CR
E1LR
E6CR
E6LR
This will tell you what battery you have.
If not found you could check the slider in the charging menu uin the car.
If you have a clear mark at 90% which say ””daily” below 90% and ”trip” above its a NCA battery.
If there is no 90% mark (daily/trip) it should be a LFP battery.
The WLTP 448km Points to having the newer Panasonic battery( = E1LR).
How do you charge normally? To what SOC level? Daily?
Sometimes the BMS loose the track a little of the battery capacity, this could make the range look shorter than it really is.
(Search the thread ”how I restored half of my lost range” for info about ”calibration of the BMS”).
If you use high SOC daily and let the car stand most of the time with high SOC, you should be prepared to loose 5-6% the first year and have a total loss of 10-12% or so after four years.
Heres teslaloggers data for SR+ 2021, probably the same battery as you have.
Note that the car never show the WLTP range. It is set to show the US Equivalent EPA Range. So 420km is the starting point.
You should probably be at around 400km or so. We can guess that you should perform a BMS calibration. Your real range is probably not as low as 368km