"Battery Percentage" state_class: measurement

[winkler-winsen]

Feature Description

Fist I love your great work. So I don't have to install my Marstek TPM-100CW anymore.

The batteryPercentage "Battery Percentage" should defined with state_class: measurement. After this precondition it gets statistics history and is selectable in Energy Dasboard | Electricity | Home battery storage | Battery state of charge sensor

I did this with a template custom sensor:

template:
  - sensor:
      - name: "Marstek Battery SoC"
        unique_id: marstek_battery_soc_energy_dashboard
        state: "{{ states('sensor.my_hm2mqtt_soc_sensor') | float(0) }}"
        unit_of_measurement: "%"
        device_class: battery
        state_class: measurement

For example B2500, maybe it's inside src/device/b2500Base.ts you can add state_class: measurement there.

field({
  key: 'pe',
  path: ['batteryPercentage'],
  transform: number(),
});

advertise(
  ['batteryPercentage'],
  sensorComponent({
    id: 'battery_percentage',
    name: 'Battery Percentage',
    device_class: 'battery',
    unit_of_measurement: '%',
    state_class: 'measurement',
  }),
);

Device Model (optional)

B2500 HMJ-2

Firmware Version (optional)

110.9

[michikrug]

This has already been implemented and just needs to be released

#311 #312

[tomquist]

Fixed in 1.7.1