diff --git a/ring_doorbell/doorbot.py b/ring_doorbell/doorbot.py
index 39c6921b..8e986b3b 100644
--- a/ring_doorbell/doorbot.py
+++ b/ring_doorbell/doorbot.py
@@ -30,8 +30,8 @@ def family(self):
     @property
     def battery_life(self):
         """Return battery life."""
-        value = int(self._attrs.get('battery_life'))
-        if value > 100:
+        value = self._attrs.get('battery_life')
+        if value and value > 100:
             value = 100
         return value