diff --git a/homeassistant/components/xiaomi_aqara/__init__.py b/homeassistant/components/xiaomi_aqara/__init__.py
index 22a8ec95c33..2ae69e3b58c 100644
--- a/homeassistant/components/xiaomi_aqara/__init__.py
+++ b/homeassistant/components/xiaomi_aqara/__init__.py
@@ -294,11 +294,16 @@ class XiaomiDevice(Entity):
 
     def parse_voltage(self, data):
         """Parse battery level data sent by gateway."""
-        if 'voltage' not in data:
+        if 'voltage' in data:
+            voltage_key = 'voltage'
+        elif 'battery_voltage' in data:
+            voltage_key = 'battery_voltage'
+        else:
             return False
+
         max_volt = 3300
         min_volt = 2800
-        voltage = data['voltage']
+        voltage = data[voltage_key]
         voltage = min(voltage, max_volt)
         voltage = max(voltage, min_volt)
         percent = ((voltage - min_volt) / (max_volt - min_volt)) * 100