diff --git a/homeassistant/components/sensor/ios.py b/homeassistant/components/sensor/ios.py
index c73e76ca752..181f0b20659 100644
--- a/homeassistant/components/sensor/ios.py
+++ b/homeassistant/components/sensor/ios.py
@@ -6,6 +6,7 @@ https://home-assistant.io/ecosystem/ios/
 """
 from homeassistant.components import ios
 from homeassistant.helpers.entity import Entity
+from homeassistant.util.icon import icon_for_battery_level
 
 DEPENDENCIES = ['ios']
 
@@ -83,44 +84,22 @@ class IOSSensor(Entity):
         device_battery = self._device[ios.ATTR_BATTERY]
         battery_state = device_battery[ios.ATTR_BATTERY_STATE]
         battery_level = device_battery[ios.ATTR_BATTERY_LEVEL]
-        rounded_level = round(battery_level, -1)
-        returning_icon_level = DEFAULT_ICON_LEVEL
-        if battery_state == ios.ATTR_BATTERY_STATE_FULL:
-            returning_icon_level = DEFAULT_ICON_LEVEL
-            if battery_state == ios.ATTR_BATTERY_STATE_CHARGING:
-                returning_icon_state = DEFAULT_ICON_STATE
-            else:
-                returning_icon_state = "{}-off".format(DEFAULT_ICON_STATE)
+        if (battery_state == ios.ATTR_BATTERY_STATE_FULL or
+                battery_state == ios.ATTR_BATTERY_STATE_UNPLUGGED):
+            icon_level = icon_for_battery_level(battery_level=battery_level,
+                                                charging=False)
+            icon_state = "{}-off".format(DEFAULT_ICON_STATE)
         elif battery_state == ios.ATTR_BATTERY_STATE_CHARGING:
-            # Why is MDI missing 10, 50, 70?
-            if rounded_level in (20, 30, 40, 60, 80, 90, 100):
-                returning_icon_level = "{}-charging-{}".format(
-                    DEFAULT_ICON_LEVEL, str(rounded_level))
-                returning_icon_state = DEFAULT_ICON_STATE
-            else:
-                returning_icon_level = "{}-charging".format(
-                    DEFAULT_ICON_LEVEL)
-                returning_icon_state = DEFAULT_ICON_STATE
-        elif battery_state == ios.ATTR_BATTERY_STATE_UNPLUGGED:
-            if rounded_level < 10:
-                returning_icon_level = "{}-outline".format(
-                    DEFAULT_ICON_LEVEL)
-                returning_icon_state = "{}-off".format(DEFAULT_ICON_STATE)
-            elif battery_level > 95:
-                returning_icon_state = "{}-off".format(DEFAULT_ICON_STATE)
-                returning_icon_level = "{}-outline".format(
-                    DEFAULT_ICON_LEVEL)
-            else:
-                returning_icon_level = "{}-{}".format(DEFAULT_ICON_LEVEL,
-                                                      str(rounded_level))
-                returning_icon_state = "{}-off".format(DEFAULT_ICON_STATE)
+            icon_level = "{}-charging".format(DEFAULT_ICON_LEVEL)
+            icon_state = DEFAULT_ICON_STATE
         elif battery_state == ios.ATTR_BATTERY_STATE_UNKNOWN:
-            returning_icon_level = "{}-unknown".format(DEFAULT_ICON_LEVEL)
-            returning_icon_state = "{}-unknown".format(DEFAULT_ICON_LEVEL)
+            icon_level = icon_for_battery_level(battery_level=None,
+                                                charging=False)
+            icon_state = "{}-unknown".format(DEFAULT_ICON_LEVEL)
 
         if self.type == "state":
-            return returning_icon_state
-        return returning_icon_level
+            return icon_state
+        return icon_level
 
     def update(self):
         """Get the latest state of the sensor."""