With the 'original' 3DR USB-C battery - they shut down at 6% or so  - but one at least get to see  a state of charge.


- how does that work with 3s or 4s  battery on XT60 cable ?  - is there any kind of voltage display and / or alarm?  - or will it just let you deep discharge it?

I just tried it with a 6S battery that should have been around 3.8 or 3.9v/cell and it showed 23.5v in the lower right corner. I don't know if there is an alarm. I only have the cable as backup and never needed it yet.