diff --git a/homeassistant/components/yoto/binary_sensor.py b/homeassistant/components/yoto/binary_sensor.py
index d76e8e9c6629..b16fa4d2a5c4 100644
--- a/homeassistant/components/yoto/binary_sensor.py
+++ b/homeassistant/components/yoto/binary_sensor.py
@@ -31,6 +31,7 @@ BINARY_SENSORS: tuple[YotoBinarySensorEntityDescription, ...] = (
     YotoBinarySensorEntityDescription(
         key="charging",
         device_class=BinarySensorDeviceClass.BATTERY_CHARGING,
+        entity_category=EntityCategory.DIAGNOSTIC,
         is_on_fn=lambda player: player.status.is_charging,
     ),
     YotoBinarySensorEntityDescription(
diff --git a/homeassistant/components/yoto/sensor.py b/homeassistant/components/yoto/sensor.py
index 0b99b2829b9e..c8d1021706b1 100644
--- a/homeassistant/components/yoto/sensor.py
+++ b/homeassistant/components/yoto/sensor.py
@@ -47,6 +47,7 @@ SENSORS: tuple[YotoSensorEntityDescription, ...] = (
         device_class=SensorDeviceClass.BATTERY,
         native_unit_of_measurement=PERCENTAGE,
         state_class=SensorStateClass.MEASUREMENT,
+        entity_category=EntityCategory.DIAGNOSTIC,
         value_fn=lambda player: player.status.battery_level_percentage,
     ),
     YotoSensorEntityDescription(
diff --git a/tests/components/yoto/snapshots/test_binary_sensor.ambr b/tests/components/yoto/snapshots/test_binary_sensor.ambr
index 222c7e0f9463..15190fcbe67c 100644
--- a/tests/components/yoto/snapshots/test_binary_sensor.ambr
+++ b/tests/components/yoto/snapshots/test_binary_sensor.ambr
@@ -114,7 +114,7 @@
     'device_id': <ANY>,
     'disabled_by': None,
     'domain': 'binary_sensor',
-    'entity_category': None,
+    'entity_category': <EntityCategory.DIAGNOSTIC: 'diagnostic'>,
     'entity_id': 'binary_sensor.nursery_yoto_charging',
     'has_entity_name': True,
     'hidden_by': None,
diff --git a/tests/components/yoto/snapshots/test_sensor.ambr b/tests/components/yoto/snapshots/test_sensor.ambr
index b3da84b146f5..4fe3d542b6fc 100644
--- a/tests/components/yoto/snapshots/test_sensor.ambr
+++ b/tests/components/yoto/snapshots/test_sensor.ambr
@@ -14,7 +14,7 @@
     'device_id': <ANY>,
     'disabled_by': None,
     'domain': 'sensor',
-    'entity_category': None,
+    'entity_category': <EntityCategory.DIAGNOSTIC: 'diagnostic'>,
     'entity_id': 'sensor.nursery_yoto_battery',
     'has_entity_name': True,
     'hidden_by': None,