-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
80% Charge is Only Showing 168 Mile Range? '22 MYP w/ 17K miles
- Thread starter RedSupraT
- Start date
ucmndd
Well-Known Member
ucmndd
Well-Known Member
I'd not bother consulting anyone until you complete a couple deep cycles and 100% charges to see what you're actually working with.
Is it getting sleep? As far as I can tell it's the magic secret to keeping battery management happy.
People have all kinds of charging patterns and range loss results are not overly dissimilar. No study I saw cross referenced range with sleeping, but we know the BMS uses sleep time to calibrate.
People have all kinds of charging patterns and range loss results are not overly dissimilar. No study I saw cross referenced range with sleeping, but we know the BMS uses sleep time to calibrate.
The charge state monitor reset by deep cycle requires emptying then charging to full then emptying before recharging to full. Something along those lines. Not sure about a sleep in the middle.
Charging to 100% last night brought the mileage back up to 284. Guess I'll have to see what happens when it's time to charge again and I set it back to 80%.
AlanSubie4Life
Efficiency Obsessed Member
You happen to get pictures? Seems more likely to have been an observation error or failure to make the charge level for some reason. Very very unlikely to go from 168 to 227 at 80%.
This did not occur to me. OP said it had been well short on indicated range for some weeks. Ongoing charger coming up short seems unlikely only to come right after posting about it.
AlanSubie4Life
Efficiency Obsessed Member
So, I'm still figuring out this stuff (just got a 2022 MY), are you using a tesla wall charger? I noticed I can set limits on both the charger and the car. Wondering if there is something going on like that? I ran into time of charge issues when my wall charger had different settings than the car.
smogne41
Active Member
Do at lest one full cycle down to ~5% SOC (or less) and back up to 100%. The BMS needs to monitor the cells over a wide charge range every so often to correctly calibrate. You should not need to do this often. Running it down to low SOC is sometimes convenient on a road trip. As long as you don't leave the cells charged <20% or >80% for very long (a few hours or so) it should not damage the cells much. (for NMC, LFP is more tolerant of high SOC).
fiehlsport
Tire Guy
Yep, the battery needs to rest at various SoCs in order to calculate its available energy correctly. Let it sit overnight at 80, 50, 20%... whatever is reasonable for your next day's commute. Don't charge it for a few days if possible. Let it figure itself out over a range of SoCs.
I don't think there's anything wrong and Tesla will probably tell you there is nothing wrong as well. You've got the correct range at 100% - it just needs help at the other levels.
I don't think there's anything wrong and Tesla will probably tell you there is nothing wrong as well. You've got the correct range at 100% - it just needs help at the other levels.
GHammer
Dark Star
There's nothing wrong with the BMS calibration, by your photos the issue is clearly that the car is just stopping charging too early. It is correctly showing the rated milage at the indicated charge level of 60% and it is showing the correct milage when it actually does charge to 80%. You need to figure out why it's stopping charging before reaching the set level. Scheduled charging setup? Issue with whatever EVSE you're using?
Similar threads
- Locked
