Remaining Capacity is a negative number?

[codepriince]

Hello, thank you first and foremost for your excellent work! I have a UPS expansion board with a rated voltage of 3.7V, which allows for the parallel installation of two 18650 batteries, each with a capacity of 3400mAh. Consequently, when connected in parallel, the total capacity becomes 6800mAh. I have successfully integrated it into HA. However, the Remaining time remains unknown, and the Remaining Capacity displays a negative number. Could you please advise if these numerical results are correct? I would greatly appreciate your assistance.

The output result:

My UPS is:
https://wiki.52pi.com/index.php?title=EP-0136

HA config(HAOS):

ina219_ups_hat:

name: Hassio UPS HAT B
unique_id: hassio_ups_hat_b
addr: 0x40
scan_interval: 60
batteries_count: 2
max_soc:x 95
battery_capacity: 6800
sma_samples: 5
min_online_current: -100
min_charging_current: 50

I2C address:

Are all the result correct? Please help me. Thank you.

[e3e6]

https://github.com/odya/hass-ina219-ups-hat/blob/master/custom_components/ina219_ups_hat/coordinator.py#L73C17-L73C43

soc = self._socOcvProvider.get_soc_from_voltage(smooth_bus_voltage / self._batteries_count)
...
 remaining_battery_capacity = (self._battery_capacity / 100.0) * soc

1. So technically value can be negative.
2. The voltage seems to be too low

Have you tried changing addr: 0x40 to 40, 45 or 17?
Which exactly UPS board you're using? B, C, D?

[codepriince]

I have tried changing addr: 0x40 to 40, 45 or 17, the result of Remaining Capacity is still a negative number and the Remaining Time is unknown.
Sorry, I don't understand what u say about UPS board B C D. But i give the UPS Link above.
I am a new.

[e3e6]

@codepriince this component is based on the source provided by Waveshare which was originally designed to work with Waveshare UPSs:

• https://www.waveshare.com/wiki/UPS_HAT
• https://www.waveshare.com/wiki/UPS_HAT_(B)
• https://www.waveshare.com/wiki/UPS_HAT_(D)

The (EP-0136) UPS you're using has completely different architecture that's why the values calculations might be wrong.

You may try asking for help here: https://github.com/frtz13/UPSPlus_mqtt
There are already some HASSIO dashboard examples, but I'm not sure how they run the python script

[codepriince]

The UPS Plus I'm using is a new generation of UPS power management module that supports OTA (Over-The-Air) firmware upgrades and features an onboard RTC (Real-Time Clock). Furthermore, it incorporates two INA219 chips, which are used to detect the battery voltage and the voltage output from the UPS Plus to the Raspberry Pi.
I thought it would be universal with INA219, maybe as you said, the architecture is different.
My UPS uses the Raspberry Pi's 5V 3A power supply as its power input, so the voltage of 4.9V may be the correct value. I think I also got some correct data using your Integration.
Thank you very much!

[e3e6]

My UPS uses the Raspberry Pi's 5V 3A power supply as its power input, so the voltage of 4.9V may be the correct value.

I guess that's the issue, because waveshare UPS are using 8.4V (2S) input.
Also, keep in mind that the original code assume a 0.1 shunt ohm resistor is present: https://github.com/waveshare/UPS-Power-Module/blob/master/ups_display/ina219.py

[codepriince]

My UPS uses the Raspberry Pi's 5V 3A power supply as its power input, so the voltage of 4.9V may be the correct value.

I guess that's the issue, because waveshare UPS are using 8.4V (2S) input. Also, keep in mind that the original code assume a 0.1 shunt ohm resistor is present: https://github.com/waveshare/UPS-Power-Module/blob/master/ups_display/ina219.py

Thanks to your reply and guidance, I found 52PI UPS. And that's it:https://github.com/archef2000/homeassistant-upsplus