diff --git a/homeassistant/components/roborock/sensor.py b/homeassistant/components/roborock/sensor.py
index 818fd338ffb..0629839f01b 100644
--- a/homeassistant/components/roborock/sensor.py
+++ b/homeassistant/components/roborock/sensor.py
@@ -13,7 +13,12 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import AREA_SQUARE_METERS, EntityCategory, UnitOfTime
+from homeassistant.const import (
+    AREA_SQUARE_METERS,
+    PERCENTAGE,
+    EntityCategory,
+    UnitOfTime,
+)
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
@@ -122,6 +127,13 @@ SENSOR_DESCRIPTIONS = [
         entity_category=EntityCategory.DIAGNOSTIC,
         options=RoborockErrorCode.keys(),
     ),
+    RoborockSensorDescription(
+        key="battery",
+        value_fn=lambda data: data.status.battery,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        native_unit_of_measurement=PERCENTAGE,
+        device_class=SensorDeviceClass.BATTERY,
+    ),
 ]
 
 
diff --git a/tests/components/roborock/test_sensor.py b/tests/components/roborock/test_sensor.py
index f9f3d327d29..19648343bb4 100644
--- a/tests/components/roborock/test_sensor.py
+++ b/tests/components/roborock/test_sensor.py
@@ -14,7 +14,7 @@ from tests.common import MockConfigEntry
 
 async def test_sensors(hass: HomeAssistant, setup_entry: MockConfigEntry) -> None:
     """Test sensors and check test values are correctly set."""
-    assert len(hass.states.async_all("sensor")) == 10
+    assert len(hass.states.async_all("sensor")) == 11
     assert hass.states.get("sensor.roborock_s7_maxv_main_brush_time_left").state == str(
         MAIN_BRUSH_REPLACE_TIME - 74382
     )
@@ -37,3 +37,4 @@ async def test_sensors(hass: HomeAssistant, setup_entry: MockConfigEntry) -> Non
     )
     assert hass.states.get("sensor.roborock_s7_maxv_cleaning_area").state == "21.0"
     assert hass.states.get("sensor.roborock_s7_maxv_vacuum_error").state == "none"
+    assert hass.states.get("sensor.roborock_s7_maxv_battery").state == "100"