Red LED - Connected to the charger chip to indicate the charger status. When the battery is charging, this red LED is on. When the battery is full, this LED is weak light or off.
I use Mestastic 2.5.20 on my board and when I power my board from USB Type-C port - this charge indicator #4 is ON.
Why? I dont charge any battery in this situation as far I know.
Also - LED#5 is blinking Green - why?
And where it is configured to disable it?
If there is no battery connected, the status if LED #4 is undefined. This means it can be on or it can be off. It can also be dimmed. Without battery connected, it doesn’t indicate anything specific. It is only used for indication of charging status. You cannot use it to indicate that the board is powered on. It is a Charging indicator.