FW: Battery runs empty sometimes when device is turned off

[mkuettner97]

The Battery of the device runs empty if the device is empty.

[Ruben-Lohberg]

I just set up a overnight run with additional serial printouts and a camera pointed to the earable in an attempt of gaining more information

[Ruben-Lohberg]

Overnight test with additional printouts

overnight-serial-log.txt

Two wakeups:

• 2026-05-19T01:20:20
• 2026-05-19T05:38:35

Both have the same signature:

RESETREAS raw: 0x00000020
RESETREAS OFF=1
SREQ=0
RESETPIN=0
wake_1=0 wake_2=0
pg=0 int=0 fg_gpout=0
power_on=0
Boot decision is power off; entering power_down()
Power off

I am not sure if we are just seeing the intended fuel gauge functionality or a bug. In any case I did not catch the bug, my battery did not drain overnight.

[Ruben-Lohberg]

@mkuettner97 does the log show intended behavior?