Leaf Battery Charging Status not working in HA

[ExMacro]

Describe the bug This code in the configuration.yaml is not working anymore. Leaf Battery Charging Status is not working as a HA sensor. Only displays Unknown status in HA. Leaf2MQTT gets the values from the Nissan servers but the sensor configuration in configuration.yaml is not working anymore.

mqtt:
  sensor:
    - name: leaf_battery_charging
      # Since VIN is not specified, it will represent the state from the first vehicle in the account.
      state_topic: "leaf/battery/charging"
      device_class: battery

HA logs an error:

Logger: homeassistant.components.mqtt.models
Source: components/sensor/__init__.py:593 
Integration: MQTT (documentation, issues) 
First occurred: 18:32:12 (1 occurrences) 
Last logged: 18:32:12

Exception raised when updating state of sensor.leaf_battery_charging, topic: 'leaf/battery/charging' with payload: b'false'
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 591, in state
    numerical_value = float(value)  # type:ignore[arg-type]
                      ^^^^^^^^^^^^
ValueError: could not convert string to float: 'false'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/mqtt/models.py", line 305, in process_write_state_requests
    entity.async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 730, in async_write_ha_state
    self._async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 830, in _async_write_ha_state
    state, attr = self._async_generate_attributes()
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 771, in _async_generate_attributes
    state = self._stringify_state(available)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 736, in _stringify_state
    if (state := self.state) is None:
                 ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 593, in state
    raise ValueError(
ValueError: Sensor sensor.leaf_battery_charging has device class 'battery', state class 'None' unit 'None' and suggested precision 'None' thus indicating it has a numeric value; however, it has the non-numeric value: 'false' (<class 'str'>)

LEAF_TYPE Newer than 2019 (the model is MY2020)

Expected behavior The sensor in configuration.yaml was working correctly before.

[ExMacro]

I hope that I added this sensor to configuration.yaml correctly.

mqtt:
  sensor:
    - name: leaf_battery_charging
      # Since VIN is not specified, it will represent the state from the first vehicle in the account.
      state_topic: "leaf/battery/charging"

[ExMacro]

I'm running Home Assistant 2023.9.2 and Leaf2MQTT version: 46

[ExMacro]

I hope that I added this sensor to configuration.yaml correctly.

mqtt:
  sensor:
    - name: leaf_battery_charging
      # Since VIN is not specified, it will represent the state from the first vehicle in the account.
      state_topic: "leaf/battery/charging"

I realised that I need this to be binary_sensor but it still only show "Unknown" in HA.

[krikkert]

As far as I can tell, you should not set the device_class to "battery". When the device is a battery, it expects the value of the sensor to be an integer or a floating point number, and to represent the percentage of battery charge remaining.

Here is my setup (excerpt):

mqtt: binary_sensor:

• name: leaf_battery_charging state_topic: "leaf//battery/charging" payload_off: "false" payload_on: "true" device: identifiers: "" device_class: battery_charging unique_id: "_leaf_batterycharging"

[ExMacro]

Yes! The solution is to put the payload_on / off into the config. This works for me now!

Thanks!

mqtt:
  binary_sensor:
    - name: leaf_battery_charging
      # Since VIN is not specified, it will represent the state from the first vehicle in the account.
      state_topic: "leaf/battery/charging"
      payload_off: "false"
      payload_on: "true"
      device_class: battery_charging

[ExMacro]

The solution is to add the payload into the config.

mqtt:
  binary_sensor:
    - name: leaf_battery_charging
      # Since VIN is not specified, it will represent the state from the first vehicle in the account.
      state_topic: "leaf/battery/charging"
      payload_off: "false"
      payload_on: "true"
      device_class: battery_charging