Adds outside battery sensor

Adds an outside battery sensor to the integration, providing information about the battery level of the outdoor sensor.

This includes:
- Mapping the `t1bat` WSLink item to the `OUTSIDE_BATTERY` sensor.
- Implementing logic to convert the battery level to a human-readable text representation and a corresponding icon.
- Updates precipitation to intensity and fixes data type of battery level

custom_components/sws12500/const.py

@@ -144,6 +144,7 @@ REMAP_WSLINK_ITEMS: dict = {
     "t1rainyr": YEARLY_RAIN,
     "t234c2tem": CH3_TEMP,
     "t234c2hum": CH3_HUMIDITY,
+    "t1bat": OUTSIDE_BATTERY,
 }
 
 # TODO: Add more sensors

custom_components/sws12500/sensor.py

@@ -15,6 +15,7 @@ from .const import (
     CHILL_INDEX,
     DOMAIN,
     HEAT_INDEX,
+    OUTSIDE_BATTERY,
     OUTSIDE_HUMIDITY,
     OUTSIDE_TEMP,
     SENSORS_TO_LOAD,
@@ -26,7 +27,7 @@ from .const import (
 from .sensors_common import WeatherSensorEntityDescription
 from .sensors_weather import SENSOR_TYPES_WEATHER_API
 from .sensors_wslink import SENSOR_TYPES_WSLINK
-from .utils import chill_index, heat_index
+from .utils import chill_index, heat_index, battery_level_to_icon, battery_level_to_text
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -130,13 +131,27 @@ class WeatherSensor(
         ):
             return self.entity_description.value_fn(chill_index(self.coordinator.data))
 
-        return None if self._data == "" else self.entity_description.value_fn(self._data)
+        return (
+            None if self._data == "" else self.entity_description.value_fn(self._data)
+        )
 
     @property
     def suggested_entity_id(self) -> str:
         """Return name."""
         return generate_entity_id("sensor.{}", self.entity_description.key)
 
+    @property
+    def icon(self) -> str | None:
+        """Return the dynamic icon for battery representation."""
+
+        if self.entity_description.key == OUTSIDE_BATTERY:
+            try:
+                return battery_level_to_icon(self.native_value)
+            except Exception:
+                return "mdi:battery-unknown"
+
+        return self.entity_description.icon
+
     @property
     def device_info(self) -> DeviceInfo:
         """Device info."""

custom_components/sws12500/sensors_wslink.py

@@ -144,7 +144,7 @@ SENSOR_TYPES_WSLINK: tuple[WeatherSensorEntityDescription, ...] = (
     WeatherSensorEntityDescription(
         key=RAIN,
         native_unit_of_measurement=UnitOfVolumetricFlux.MILLIMETERS_PER_HOUR,
-        device_class=SensorDeviceClass.PRECIPITATION,
+        device_class=SensorDeviceClass.PRECIPITATION_INTENSITY,
         state_class=SensorStateClass.TOTAL,
         suggested_unit_of_measurement=UnitOfVolumetricFlux.MILLIMETERS_PER_HOUR,
         suggested_display_precision=2,
@@ -307,8 +307,8 @@ SENSOR_TYPES_WSLINK: tuple[WeatherSensorEntityDescription, ...] = (
     WeatherSensorEntityDescription(
         key=OUTSIDE_BATTERY,
         translation_key=OUTSIDE_BATTERY,
-        icon=lambda data: battery_level_to_icon(battery_level_to_text(int(data))),
+        icon="mdi:battery-unknown",
         device_class=SensorDeviceClass.ENUM,
-        value_fn=lambda data: battery_level_to_text(int(data)),
+        value_fn=lambda data: battery_level_to_text(data),
     ),
 )

custom_components/sws12500/utils.py

@@ -192,7 +192,7 @@ def battery_level_to_text(battery: int) -> UnitOfBat:
     return {
         0: UnitOfBat.LOW,
         1: UnitOfBat.NORMAL,
-    }.get(battery, UnitOfBat.UNKNOWN)
+    }.get(int(battery) if battery is not None else None, UnitOfBat.UNKNOWN)
 
 
 def battery_level_to_icon(battery: UnitOfBat) -> str:
@@ -202,7 +202,7 @@ def battery_level_to_icon(battery: UnitOfBat) -> str:
     """
 
     icons = {
-        UnitOfBat.LOW: "mdi:battery-alert",
+        UnitOfBat.LOW: "mdi:battery-low",
         UnitOfBat.NORMAL: "mdi:battery",
     }