I took my Mavic mini out today and when I took the charging hub out of the fly more case, it was warm to the touch. I have been storing all three batteries in there fully charged since the last flight on Sunday (4 days). It wasn’t super hot but I’m concerned the that if the problem worsened it would become a fire hazard and it seems like it shouldn’t be getting warm when idle. Should I not keep the batteries in the charger? Has anyone else had an issue with this?

Maybe get the battery safe bag that DJI sells. The batteries get warm after flight but not when idle

Also maybe contact DJI support for more help!