Hey dear pimodule Team,

I set up UPS PIco HV4.0B/C like described in the manual. I had some trouble getting the current firmware on the UPS,

the serial communication could not be established, I managed then to upload the current firmware 179 with invoking

the manual bootloader mode at the point in the firmware uploader skript, where the loop around trying to communicate

over serial with the ups happens.

I would like to use the UPS now with only a supercap and no secondary battery.  I do not have the pogo pins installed

and would like to not use them if possible.

I set per i2c

sudo i2cset -y 1 0x6b 0x07 0x43

like it says in the manual (Selects power source the 100F Supercapacitor as the ONLY Power Backup source - (Single Mode)).

However, when I run the pico_status skript I get:

  **********************************************
               UPS PIco HV4.0 Status               
        Version 1.4   Relase Date 13.03.2024       
       Compatible with Firmware 0x0168 and up      
  *******************************************
 
  System Clock read from Date................: 2024-11-26 15:42:10
  System Clock read from HWCLOCK.............: 2024-11-26 15:42:09.971614+01:00
  UPS PIco RTC Registers direct read.........: 2024-11-26 14:42:11
 
  UPS PIco Firmware..........................: 0179
  UPS PIco Bootloader........................: 41
  UPS PIco PCB Version.......................: 42
  UPS PIco PCB Default Battery...............: Battery LiPO 'L'    0x4C
  UPS PIco Set Battery.......................: On Board Super Cap (100F) 'C' 0x43
 
  Raspberry Pi Core Temprature...............: 43 C
  Raspberry Pi Core Temprature read by PICo..: 44 C
  Embedded Fan Temp. Threshold...............: 45 C
  Embedded Fan Speed.........................: OFF % of Total RPM
 
  Powering Mode..............................: Cable POWERED
  Power Backup Set Mode......................: Mixed Bat/SCap Backup
 
  Battery Level..............................: 0.0 V
  Super Capacitor Level......................: 2.7 V
  EPR/PPoE Powering Level....................: 0.0 V
  RPi(USB) Powering Level....................: 5.1 V
 
  Running Time on Battery....................: 1 min
  Battery Charger Status.....................: ON
  Max Allowed Battery charging curent........: 0.11  A
  Max Allowed On Board SCAP charging curent..: 1.27  A
 
  Power Source(s) Cable checking timeout.....: 0.3 Seconds
  Restart on Hold time.......................: 00 Seconds
  FSSD Durtion...............................: 10 Seconds
  Firmware loop..............................: Healthy - Running Properly
  Still Alive Timer..(against.freezing)......: Timer Disabled
  Raspberry Pi OFF waiting time..............: 5 Minutes
  Magic Switch Funtionality..................: de-Activated
 
  UPS PIco HV4.0 RS232(s) Setup..............: RPI_RS232_OFF     PICO_RS232_OFF
  -12/+12 V RS232 Driver Connection..........: none
  RS232 PIco routing.........................: not implemented yet
  RS232(s) PIco sleep/wakeup data setup......: not implemented yet
  RS232(s) PIco sleep/wakeup data received...: not implemented yet
 
  Internal Relay State.......................: OFF
  User LED Green Activity....................: OFF
  User LED Blue Activity.....................: OFF
  Green LED mapping setup....................: none
  Blue LED mapping setup.....................: none
 
  A/D Converters Correction Factor...........: 00
  A/D Converter 0 ...........................: 0.0
  A/D Converter 1 ...........................: 0.0
  Opto Coupler/Digital Input Level...........: 0.0
 
  *******************************************
   Powered by PiModules with help from ChatGPT 4.0 
  **********************************************

So, the UPS is now set with Supercap, but it says it is still running on "mixed mode".

The running time on battery is set to the default value of 1 min.

The raspberry is powered with USB (official power device 5V@5A), fan is working,  

rtc is working.The Daemon is running and the light SYS is blinking at around 700ms and

the SCA led is on permanently.

So the supercap is fully loaded now and I unplug the USB power, what happens than is

that the raspberry dies off quite quickly and I think it does not regulary shutdown.

I commented out the "sudo shutdown now -h" commands in the daemon and the

raspberry stops nevertheless. However, the green activity led keeps on blinking 

and the supercap seem to be discharging as the correspondin led turns off.

The green led of the raspberry blinks and the sys led from the UPS stays on until the

the supercap is discharged (which takes longer than 1 min like I would think the battery

timer should shutwdon the UPS?).

Could you maybe give me a hint, if there is any other setting I can make or I

misunderstood something?