diff --git a/homeassistant/components/gogogate2/sensor.py b/homeassistant/components/gogogate2/sensor.py
index 9721f9b8722..743c8e7efc7 100644
--- a/homeassistant/components/gogogate2/sensor.py
+++ b/homeassistant/components/gogogate2/sensor.py
@@ -11,6 +11,7 @@ from homeassistant.const import (
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_TEMPERATURE,
     ENTITY_CATEGORY_DIAGNOSTIC,
+    PERCENTAGE,
     TEMP_CELSIUS,
 )
 from homeassistant.core import HomeAssistant
@@ -78,6 +79,7 @@ class DoorSensorBattery(DoorSensorEntity):
         super().__init__(config_entry, data_update_coordinator, door, unique_id)
         self._attr_device_class = DEVICE_CLASS_BATTERY
         self._attr_state_class = STATE_CLASS_MEASUREMENT
+        self._attr_native_unit_of_measurement = PERCENTAGE
 
     @property
     def name(self):
diff --git a/tests/components/gogogate2/test_sensor.py b/tests/components/gogogate2/test_sensor.py
index 1a59c5fd3c5..129fcac504f 100644
--- a/tests/components/gogogate2/test_sensor.py
+++ b/tests/components/gogogate2/test_sensor.py
@@ -172,6 +172,7 @@ async def test_sensor_update(gogogate2api_mock, hass: HomeAssistant) -> None:
         "friendly_name": "Door1 battery",
         "sensor_id": "ABCD",
         "state_class": "measurement",
+        "unit_of_measurement": "%",
     }
     temp_attributes = {
         "device_class": "temperature",
@@ -248,6 +249,7 @@ async def test_availability(ismartgateapi_mock, hass: HomeAssistant) -> None:
         "friendly_name": "Door1 battery",
         "sensor_id": "ABCD",
         "state_class": "measurement",
+        "unit_of_measurement": "%",
     }
     temp_attributes = {
         "device_class": "temperature",