diff --git a/homeassistant/components/motion_blinds/sensor.py b/homeassistant/components/motion_blinds/sensor.py
index d8dc25e0006..e71abe09069 100644
--- a/homeassistant/components/motion_blinds/sensor.py
+++ b/homeassistant/components/motion_blinds/sensor.py
@@ -48,6 +48,7 @@ class MotionBatterySensor(MotionCoordinatorEntity, SensorEntity):
 
     _attr_device_class = SensorDeviceClass.BATTERY
     _attr_native_unit_of_measurement = PERCENTAGE
+    _attr_entity_category = EntityCategory.DIAGNOSTIC
 
     def __init__(self, coordinator, blind):
         """Initialize the Motion Battery Sensor."""