My latest charge session (charge #25, still currently in progress) is showing negative kWh added and negative charge efficiency. I assume this is some kind of bug.
I have the same issue which occurs when I charge in an underground carpark with no Mobile Data coverage (thick concrete walls). TeslaFi thinks my return trip is one single journey and when adding a lot of charge the Wh/mi goes int0 -900 to -1000 wh/mi.
I don't want to delete the record of this drive but it is skewing my average range for the month. I will raise a separate Feature request for this.
I also had the same today. This on 2 different charges at 2 different locations. Is there a fix? Maybe manually edit the charge record?
I have just experienced this very thing
This should be fixed and hopefully I finally found a permanent fix to prevent it from happening again.
Customer support service by UserEcho