No sentry doesn't work at below 20% and I don't have summon. No, my "phantom drain" is pretty good, I never get more than 1km overnight. I might have been mind-tricked or didn't remember correctly after a long drive, but I am pretty sure it wasn't that low. And going to 92% at charge limit set to 90% is something that never happened on my car, ever. It could've been some temperature thing, but the temperature was pretty stable during the night.
I think it is more a contribution to leaving the car at very low state of charge, high cell imbalance that might trick the BMS into thinking, hey - I think we might have less energy than I thought 3 hours ago. I think this is more plausible.
Oh, derp, fair point. My bad. Still seems like the car was awake though with those numbers though. It could've been something like 12V battery charging (I've noticed it does this after long drives occasionally). There's so many potential explanations that all involve the car doing
something for
some reason, which leaves it unlikely that it's just the BMS wigging out.
I’ve stated it before but it’s probably lost in all the thread but I lost 10% of range only at 18000km.
I always charged to 80% until I tried some time ago ser always to 90% and let the charge discharge slowly using 20% per day until having 15% remaining and then charging back to 90%,
Letting the car stay put all night at about 90, 70, 50, 30 % every day I parked. I also removed sentry both at home and work and use it only in unknown places.
first time I did this “use and not charge daily” thing I charged back up to 90 at home with 16A, today I did the second time using a supercharger so si could see the degradation ABRP shows now.
I started at 448km at 100% SOC and today I’m back to 468km at 100% SOC, ABRP says I’m at 4% degradation.
In the Teslafi screenshot you can’t see the 448km because I didn’t have it yet, I started using it when charging to 90% made me recover some range that I decided to log the progress
Whoa, where in the world is ABRP getting its degradation number from? That's
way off. Great,
another service doing weird black-box calculations!
If you do the
optimistic calculation (current 100% range divided by rated original range), that's still 6.2%, significantly higher than 4%. If you do the more honest calculation based on true kWh capacity, that puts you somewhere above 8%.
Problem is, this 100% number is coming from TeslaFi still and not the car itself. I will still caution that the 100% estimate from TeslaFi is about +-1% with you charging to 90%, and is still under many influences (the primary one being battery temperature).
Anyhow, I think you saw real increases for the same reason OP did. It's not that you were somehow giving the battery more readings probably. It's that it finally had a chance to
balance, since it was never resting before due to constant Sentry Mode usage. Overall a positive result, but there was probably a quicker/easier way to get there (just charge to 80% as before, but don't use Sentry as much).