diff --git a/custom_components/sws12500/const.py b/custom_components/sws12500/const.py
index 1819c7f..f5b41e7 100644
--- a/custom_components/sws12500/const.py
+++ b/custom_components/sws12500/const.py
@@ -23,8 +23,12 @@ WSLINK: Final = "wslink"
 WINDY_API_KEY = "WINDY_API_KEY"
 WINDY_ENABLED: Final = "windy_enabled_checkbox"
 WINDY_LOGGER_ENABLED: Final = "windy_logger_checkbox"
-WINDY_NOT_INSERTED: Final = "Data was succefuly sent to Windy, but not inserted by Windy API. Does anyone else sent data to Windy?"
-WINDY_INVALID_KEY: Final = "Windy API KEY is invalid. Send data to Windy is now disabled. Check your API KEY and try again."
+WINDY_NOT_INSERTED: Final = (
+    "Data was succefuly sent to Windy, but not inserted by Windy API. Does anyone else sent data to Windy?"
+)
+WINDY_INVALID_KEY: Final = (
+    "Windy API KEY is invalid. Send data to Windy is now disabled. Check your API KEY and try again."
+)
 WINDY_SUCCESS: Final = (
     "Windy successfully sent data and data was successfully inserted by Windy API"
 )
@@ -63,6 +67,7 @@ OUTSIDE_TEMP: Final = "outside_temp"
 DEW_POINT: Final = "dew_point"
 OUTSIDE_HUMIDITY: Final = "outside_humidity"
 OUTSIDE_CONNECTION: Final = "outside_connection"
+OUTSIDE_BATTERY: Final = "outside_battery"
 WIND_SPEED: Final = "wind_speed"
 WIND_GUST: Final = "wind_gust"
 WIND_DIR: Final = "wind_dir"
@@ -137,6 +142,7 @@ REMAP_WSLINK_ITEMS: dict = {
     "t1rainwy": WEEKLY_RAIN,
     "t1rainmth": MONTHLY_RAIN,
     "t1rainyr": YEARLY_RAIN,
+    "t1bat": OUTSIDE_BATTERY,
 }
 
 # TODO: Add more sensors
@@ -153,6 +159,7 @@ DISABLED_BY_DEFAULT: Final = [
     CH3_HUMIDITY,
     CH4_TEMP,
     CH4_HUMIDITY,
+    OUTSIDE_BATTERY,
 ]
 
 
@@ -195,3 +202,18 @@ AZIMUT: list[UnitOfDir] = [
     UnitOfDir.NNW,
     UnitOfDir.N,
 ]
+
+
+class UnitOfBat(StrEnum):
+    """Battery level unit of measure."""
+
+    LOW = "low"
+    NORMAL = "normal"
+    UNKNOWN = "unknown"
+
+
+BATTERY_LEVEL: list[UnitOfBat] = [
+    UnitOfBat.LOW,
+    UnitOfBat.NORMAL,
+    UnitOfBat.UNKNOWN,
+]
diff --git a/custom_components/sws12500/sensors_wslink.py b/custom_components/sws12500/sensors_wslink.py
index dc09aa9..d808564 100644
--- a/custom_components/sws12500/sensors_wslink.py
+++ b/custom_components/sws12500/sensors_wslink.py
@@ -27,25 +27,26 @@ from .const import (
     DAILY_RAIN,
     DEW_POINT,
     HEAT_INDEX,
+    HOURLY_RAIN,
     INDOOR_HUMIDITY,
     INDOOR_TEMP,
+    MONTHLY_RAIN,
+    OUTSIDE_BATTERY,
     OUTSIDE_HUMIDITY,
     OUTSIDE_TEMP,
     RAIN,
     SOLAR_RADIATION,
     UV,
+    WEEKLY_RAIN,
     WIND_AZIMUT,
     WIND_DIR,
     WIND_GUST,
     WIND_SPEED,
-    UnitOfDir,
-    MONTHLY_RAIN,
     YEARLY_RAIN,
-    HOURLY_RAIN,
-    WEEKLY_RAIN,
+    UnitOfDir,
 )
 from .sensors_common import WeatherSensorEntityDescription
-from .utils import wind_dir_to_text
+from .utils import battery_level_to_icon, battery_level_to_text, wind_dir_to_text
 
 SENSOR_TYPES_WSLINK: tuple[WeatherSensorEntityDescription, ...] = (
     WeatherSensorEntityDescription(
@@ -303,4 +304,11 @@ SENSOR_TYPES_WSLINK: tuple[WeatherSensorEntityDescription, ...] = (
         translation_key=CHILL_INDEX,
         value_fn=lambda data: cast("int", data),
     ),
+    WeatherSensorEntityDescription(
+        key=OUTSIDE_BATTERY,
+        translation_key=OUTSIDE_BATTERY,
+        icon=lambda data: battery_level_to_icon(battery_level_to_text(int(data))),
+        device_class=SensorDeviceClass.ENUM,
+        value_fn=lambda data: battery_level_to_text(int(data)),
+    ),
 )
diff --git a/custom_components/sws12500/strings.json b/custom_components/sws12500/strings.json
index fda0f39..3472af0 100644
--- a/custom_components/sws12500/strings.json
+++ b/custom_components/sws12500/strings.json
@@ -131,6 +131,14 @@
           "wnw": "WNW",
           "nw": "NW",
           "nnw": "NNW"
+        },
+        "outside_battery": {
+          "name": "Outside battery level",
+          "state": {
+            "normal": "OK",
+            "low": "Low",
+            "unknown": "Unknown / drained out"
+          }
         }
       }
     }
diff --git a/custom_components/sws12500/translations/cs.json b/custom_components/sws12500/translations/cs.json
index e024ec3..8da9943 100644
--- a/custom_components/sws12500/translations/cs.json
+++ b/custom_components/sws12500/translations/cs.json
@@ -136,6 +136,14 @@
           "nw": "SZ",
           "nnw": "SSZ"
         }
+      },
+      "outside_battery": {
+        "name": "Stav nabití venkovní baterie",
+        "state": {
+          "low": "Nízká",
+          "normal": "Normální",
+          "unknown": "Neznámá / zcela vybitá"
+        }
       }
     }
   },
diff --git a/custom_components/sws12500/translations/en.json b/custom_components/sws12500/translations/en.json
index e0ce1a6..b0f3567 100644
--- a/custom_components/sws12500/translations/en.json
+++ b/custom_components/sws12500/translations/en.json
@@ -136,6 +136,14 @@
           "nw": "NW",
           "nnw": "NNW"
         }
+      },
+      "outside_battery": {
+        "name": "Outside battery level",
+        "state": {
+          "normal": "OK",
+          "low": "Low",
+          "unknown": "Unknown / drained out"
+        }
       }
     }
   },
diff --git a/custom_components/sws12500/utils.py b/custom_components/sws12500/utils.py
index 30a667b..c78f63f 100644
--- a/custom_components/sws12500/utils.py
+++ b/custom_components/sws12500/utils.py
@@ -20,6 +20,7 @@ from homeassistant.helpers.translation import async_get_translations
 
 from .const import (
     AZIMUT,
+    BATTERY_LEVEL,
     DATABASE_PATH,
     DEV_DBG,
     OUTSIDE_HUMIDITY,
@@ -29,6 +30,7 @@ from .const import (
     SENSORS_TO_LOAD,
     WIND_SPEED,
     UnitOfDir,
+    UnitOfBat,
 )
 
 _LOGGER = logging.getLogger(__name__)
@@ -181,6 +183,32 @@ def wind_dir_to_text(deg: float) -> UnitOfDir | None:
     return None
 
 
+def battery_level_to_text(battery: int) -> UnitOfBat:
+    """Return battery level in text representation.
+
+    Returns UnitOfBat
+    """
+
+    return {
+        0: UnitOfBat.LOW,
+        1: UnitOfBat.NORMAL,
+    }.get(battery, UnitOfBat.UNKNOWN)
+
+
+def battery_level_to_icon(battery: UnitOfBat) -> str:
+    """Return battery level in icon representation.
+
+    Returns str
+    """
+
+    icons = {
+        UnitOfBat.LOW: "mdi:battery-alert",
+        UnitOfBat.NORMAL: "mdi:battery",
+    }
+
+    return icons.get(battery, "mdi:battery-unknown")
+
+
 def fahrenheit_to_celsius(fahrenheit: float) -> float:
     """Convert Fahrenheit to Celsius."""
     return (fahrenheit - 32) * 5.0 / 9.0
@@ -267,10 +295,12 @@ def long_term_units_in_statistics_meta():
     db = conn.cursor()
 
     try:
-        db.execute("""
+        db.execute(
+            """
             SELECT statistic_id, unit_of_measurement from statistics_meta
             WHERE statistic_id LIKE 'sensor.weather_station_sws%'
-         """)
+         """
+        )
         rows = db.fetchall()
         sensor_units = {
             statistic_id: f"{statistic_id} ({unit})" for statistic_id, unit in rows
@@ -286,8 +316,8 @@ def long_term_units_in_statistics_meta():
 
 async def migrate_data(hass: HomeAssistant, sensor_id: str | None = None) -> bool:
     """Migrate data from mm/d to mm."""
-    
-    _LOGGER.debug("Sensor %s is required for data migration", sensor_id) 
+
+    _LOGGER.debug("Sensor %s is required for data migration", sensor_id)
     updated_rows = 0
 
     if not Path(DATABASE_PATH).exists():