icon_template Battery

- platform: template
  sensors:
    mia_phone_battery:
      friendly_name: 'Batteria telefono'
      value_template: '{{states.device_tracker.google_maps_XXXXXXXXXXXXXX.attributes.battery_level | round}}'
      unit_of_measurement: '% Batteria'
      icon_template: >-
                {% set battery_level = state_attr("device_tracker.google_maps_XXXXXXXXXXXXXX","battery_level")|int('unknown') %}
                {% set battery_round = (battery_level|int / 10)|int * 10 %}
                {% set charge_status = state_attr("device_tracker.google_maps_XXXXXXXXXXXXXX","battery_charging") %}
                {% if battery_level == 'unknown' %}
                  mdi:battery-unknown
                {% else %}
                  {% if charge_status == True %}
                    {% if battery_round > 0 %}
                      mdi:battery-charging-{{ battery_round }}
                    {% else %}
                      mdi:battery-charging-outline
                    {% endif %}
                  {% else %}
                    {% if battery_round >= 100 %}
                      mdi:battery
                    {% elif battery_round > 0 %}
                       mdi:battery-{{ battery_round}}
                    {% else %}
                      mdi:battery-alert
                    {% endif %}
                  {% endif %}
                {% endif %}