diff --git a/homeassistant/components/notion/binary_sensor.py b/homeassistant/components/notion/binary_sensor.py
index 1597957c1f5275..e6f4307a53c593 100644
--- a/homeassistant/components/notion/binary_sensor.py
+++ b/homeassistant/components/notion/binary_sensor.py
@@ -77,7 +77,16 @@ class NotionBinarySensor(NotionEntity, BinarySensorEntity):
     @callback
     def _async_update_from_latest_data(self) -> None:
         """Fetch new state data for the sensor."""
-        self._state = self.coordinator.data["tasks"][self._task_id]["status"]["value"]
+        task = self.coordinator.data["tasks"][self._task_id]
+
+        if task["task_type"] == SENSOR_BATTERY:
+            self._state = self.coordinator.data["tasks"][self._task_id]["status"][
+                "data"
+            ]["to_state"]
+        else:
+            self._state = self.coordinator.data["tasks"][self._task_id]["status"][
+                "value"
+            ]
 
     @property
     def is_on(self) -> bool:
@@ -85,7 +94,7 @@ def is_on(self) -> bool:
         task = self.coordinator.data["tasks"][self._task_id]
 
         if task["task_type"] == SENSOR_BATTERY:
-            return self._state != "battery_good"
+            return self._state != "critical"
         if task["task_type"] in (
             SENSOR_DOOR,
             SENSOR_GARAGE_DOOR,