Red LED below SD-slot of m5s-FIRE?

[grelm]

Hi - another beginners question:
What is indicated by the red LED below the SD-slot of the M5Stack-FIRE?
Sometimes it is on, sometimes it is off, sometimes it flashes.
Flashing is done with varying on-time and varying off-time.
Thanks - grelm

[zhufu86]

I also noticed this... don't know why.

[heybin]

if use it in Charging， it will flicker

[grelm]

Hi @heybin !
What do you want to show us with the picture: flickering due to problems with contacts?

Do you know what the meaning is of:

1. flashing? ( = 1s on > 1s off > 1s on > and so on: charging?)
2. continiously OFF?
3. continiously ON?

What I noticed so far:

a) USB charging cable connected to M5GO CHG Base and M5GO CHG Base attached to M5GO Base: LED is flashing and obviously charging
b) M5GO disconnected from M5GO Base: LED = ON for 30 seconds , than OFF, but FIRE is still on and operational (Power from internal Lipo Battery?)
c) M5GO CHG Base attached to M5GO Base, but no power on USB-Cable: same behaviour as item b) above. (Power from internal Lipo battery AND/OR CHG Base Battery?)

For a) and b) so far, I didn't test, for how long the FIRE stays ON.