Start deprecation of battery properties in vacuum

homeassistant/components/vacuum/__init__.py

@@ -247,6 +247,8 @@ class StateVacuumEntity(
     _attr_supported_features: VacuumEntityFeature = VacuumEntityFeature(0)
 
     __vacuum_legacy_state: bool = False
+    __vacuum_legacy_battery_level: bool = False
+    __vacuum_legacy_battery_icon: bool = False
 
     def __init_subclass__(cls, **kwargs: Any) -> None:
         """Post initialisation processing."""
@@ -255,6 +257,19 @@ class StateVacuumEntity(
             # Integrations should use the 'activity' property instead of
             # setting the state directly.
             cls.__vacuum_legacy_state = True
+        if any(
+            method in cls.__dict__
+            for method in ("_attr_battery_level", "battery_level")
+        ):
+            # Integrations should use the 'activity' property instead of
+            # setting the state directly.
+            cls.__vacuum_legacy_battery_level = True
+        if any(
+            method in cls.__dict__ for method in ("_attr_battery_icon", "battery_icon")
+        ):
+            # Integrations should use the 'activity' property instead of
+            # setting the state directly.
+            cls.__vacuum_legacy_battery_icon = True
 
     def __setattr__(self, name: str, value: Any) -> None:
         """Set attribute.
@@ -264,6 +279,8 @@ class StateVacuumEntity(
         """
         if name == "_attr_state":
             self._report_deprecated_activity_handling()
+        if name in {"_attr_battery_level", "_attr_battery_icon"}:
+            self._report_deprecated_battery_properties(name[6:])
         return super().__setattr__(name, value)
 
     @callback
@@ -277,6 +294,10 @@ class StateVacuumEntity(
         super().add_to_platform_start(hass, platform, parallel_updates)
         if self.__vacuum_legacy_state:
             self._report_deprecated_activity_handling()
+        if self.__vacuum_legacy_battery_level:
+            self._report_deprecated_battery_properties("battery_level")
+        if self.__vacuum_legacy_battery_icon:
+            self._report_deprecated_battery_properties("battery_icon")
 
     @callback
     def _report_deprecated_activity_handling(self) -> None:
@@ -295,6 +316,23 @@ class StateVacuumEntity(
             exclude_integrations={DOMAIN},
         )
 
+    @callback
+    def _report_deprecated_battery_properties(self, property: str) -> None:
+        """Report on deprecated use of battery properties.
+
+        Integrations should implement a sensor instead.
+        """
+        report_usage(
+            f"is setting the {property} which has been deprecated."
+            f" Integration {self.platform.platform_name} should implement a sensor"
+            " instead with a correct device class and link it to the same device",
+            core_integration_behavior=ReportBehavior.LOG,
+            custom_integration_behavior=ReportBehavior.LOG,
+            breaks_in_ha_version="2026.7",
+            integration_domain=self.platform.platform_name if self.platform else None,
+            exclude_integrations={DOMAIN},
+        )
+
     @cached_property
     def battery_level(self) -> int | None:
         """Return the battery level of the vacuum cleaner."""

tests/components/vacuum/test_init.py

@@ -435,3 +435,120 @@ async def test_vacuum_deprecated_state_does_not_break_state(
     state = hass.states.get(entity.entity_id)
     assert state is not None
     assert state.state == "cleaning"
+
+
+@pytest.mark.usefixtures("mock_as_custom_component")
+async def test_vacuum_log_deprecated_battery_properties(
+    hass: HomeAssistant,
+    config_flow_fixture: None,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test incorrectly using battery properties logs watning."""
+
+    class MockLegacyVacuum(MockVacuum):
+        """Mocked vacuum entity."""
+
+        @property
+        def activity(self) -> str:
+            """Return the state of the entity."""
+            return VacuumActivity.CLEANING
+
+        @property
+        def battery_level(self) -> int:
+            """Return the battery level of the vacuum."""
+            return 50
+
+        @property
+        def battery_icon(self) -> str:
+            """Return the battery icon of the vacuum."""
+            return "mdi:battery-50"
+
+    entity = MockLegacyVacuum(
+        name="Testing",
+        entity_id="vacuum.test",
+    )
+    config_entry = MockConfigEntry(domain="test")
+    config_entry.add_to_hass(hass)
+
+    mock_integration(
+        hass,
+        MockModule(
+            "test",
+            async_setup_entry=help_async_setup_entry_init,
+            async_unload_entry=help_async_unload_entry,
+        ),
+        built_in=False,
+    )
+    setup_test_component_platform(hass, DOMAIN, [entity], from_config_entry=True)
+    assert await hass.config_entries.async_setup(config_entry.entry_id)
+
+    state = hass.states.get(entity.entity_id)
+    assert state is not None
+
+    assert (
+        "Detected that custom integration 'test' is setting the battery_icon which has been deprecated."
+        " Integration test should implement a sensor instead with a correct device class and link it"
+        " to the same device. This will stop working in Home Assistant 2026.7,"
+        " please report it to the author of the 'test' custom integration"
+        in caplog.text
+    )
+
+
+@pytest.mark.usefixtures("mock_as_custom_component")
+async def test_vacuum_log_deprecated_battery_properties_using_attr(
+    hass: HomeAssistant,
+    config_flow_fixture: None,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test incorrectly using _attr_battery_* attribute does log issue and raise repair."""
+
+    class MockLegacyVacuum(MockVacuum):
+        """Mocked vacuum entity."""
+
+        def start(self) -> None:
+            """Start cleaning."""
+            self._attr_battery_level = 50
+            self._attr_battery_icon = "mdi:battery-50"
+
+    entity = MockLegacyVacuum(
+        name="Testing",
+        entity_id="vacuum.test",
+    )
+    config_entry = MockConfigEntry(domain="test")
+    config_entry.add_to_hass(hass)
+
+    mock_integration(
+        hass,
+        MockModule(
+            "test",
+            async_setup_entry=help_async_setup_entry_init,
+            async_unload_entry=help_async_unload_entry,
+        ),
+        built_in=False,
+    )
+    setup_test_component_platform(hass, DOMAIN, [entity], from_config_entry=True)
+    assert await hass.config_entries.async_setup(config_entry.entry_id)
+
+    state = hass.states.get(entity.entity_id)
+    assert state is not None
+
+    assert (
+        "Detected that custom integration 'test' is setting the battery_level which has been deprecated."
+        " Integration test should implement a sensor instead with a correct device class and link it to"
+        " the same device. This will stop working in Home Assistant 2026.7,"
+        " please report it to the author of the 'test' custom integration"
+        in caplog.text
+    )
+
+    await async_start(hass, entity.entity_id)
+
+    caplog.clear()
+    await async_start(hass, entity.entity_id)
+    # Test we only log once
+    assert (
+        "Detected that custom integration 'test' is setting the battery_level which has been deprecated."
+        " Integration test should implement a sensor instead with a correct device class and link it to"
+        " the same device. This will stop working in Home Assistant 2026.7,"
+        " please report it to the author of the 'test' custom integration"
+        not in caplog.text
+    )