Need Help, division by zero

Configuration
1

Hello all,

unfortunately the value can be partly = 0 (states(‘sensor.foxess_bat_discharge_power’), what can I do to make it work anyway? Thank you

    # Batterierest
      - name: Batterie_Rest
        unique_id: "Batterie_Rest"
        unit_of_measurement: h
        state: >
         {{ states('sensor.foxess_bat_soc')|float(1)*8.64/100 / states('sensor.foxess_bat_discharge_power')|float(0)|round(0)}}
2 
    # Batterierest
      - name: Batterie_Rest
        unique_id: "Batterie_Rest"
        unit_of_measurement: h
        state: >
         {{ states('sensor.foxess_bat_soc')|float(1)*8.64/100 / states('sensor.foxess_bat_discharge_power')|float(1)|round(0)}}
        availability: >
         {{ has_value('sensor.foxess_bat_soc') and states('sensor.foxess_bat_discharge_power')|float(0) > 0 }}
3

Still mentiones ZeroDivisionError: float division by zero when I test it.

4

Then you must have done something other than what I posted. The availability template is evaluated before the state template and prevents the state template being evaluated if the availability is false.

5

Battery SOC for example 100% discharge atm is 0,00 kW but if I copy your code to yaml ist still says unavailable…

6

Yes that is correct.

Division by zero is mathematically undefined. So the availability template is set to make the value unavailable in this case.

7

Can the value only be displayed if equation is not zero? I am a beginner…

8 
    # Batterierest
      - name: Batterie_Rest
        unique_id: "Batterie_Rest"
        unit_of_measurement: h
        state: >
            {% if states('sensor.foxess_bat_soc')|float(0)* 7.344/100 / states('sensor.foxess_bat_discharge_power')|float(0) > 0 %}
            {{states('sensor.foxess_bat_soc')|float(0)* 7.344/100 / states('sensor.foxess_bat_discharge_power')|float(0)| round (3) }}
            {% else %}
                {{(states ('0.0') | float(0)) |round(3) }}
            {% endif %}

how can I get rid of “unavailable” if its 0?

11

It is only unavailable if the result is undefined, not if the result is 0.