Exactly.
It is. My car does it starting every Fall through Spring. It is actually charged to 80%, but 1% is unavailable because of the battery temperature. (As @E90alex showed in the screen capture with the little blue sliver showing how much is unavailable.)
I use the Tesla wall charger. It's always plugged in while in the garage .. I hate to see it at 48a given my electrical wiring is not up for that. I used the kw from previous charge to
Has it ever worked? The wall connector needs to be told that is is on a 30a breaker during setup. For some silly reason they defaulted to 60a.
Yes, I did set it up as a 30a and I can choose up to 24a (80%) for charging. It's just a bit scary to see it displaying 48a if/when wall units loses WIFI.
This is the best explanation. Been discussed many times in other threads. Also if you let the battery drain to a low percentage, or charge to a high percentage, the car must sit at that state of charge undisturbed (exit the app and turn off sentry, etc.) for a few hour so it sleeps. It recalibrates while it sleeps. That's how it was explained to me. BTW, this happens during the summer too, not just with a cold battery. Mostly will happen to those attempting overall battery life preservation by keeping low SOC and driving immediately after charging, so car doesn't sit at high SOC. Basically the car has no high and low SOC data or sleep time as such, to calibrate from. Not harmful to battery but can be a bit inconvenient
I have the same issue but no wall charger, just a 240v outlet. MY seems much more accurate than my '19 M3 was. That would go under or over the limit by 3-5% sometimes.
