diff --git a/roborock/data/b01_q7/b01_q7_containers.py b/roborock/data/b01_q7/b01_q7_containers.py
index 6ae43099..a75b7185 100644
--- a/roborock/data/b01_q7/b01_q7_containers.py
+++ b/roborock/data/b01_q7/b01_q7_containers.py
@@ -114,7 +114,7 @@ class B01Props(RoborockBase):
     wind: SCWindMapping | None = None
     water: WaterLevelMapping | None = None
     mode: CleanTypeMapping | None = None
-    quantity: int | None = None
+    quantity: int | None = None  # The Q7 L5 reports its battery level as 'quantity'
     alarm: int | None = None
     volume: int | None = None
     hypa: int | None = None
@@ -169,6 +169,13 @@ class B01Props(RoborockBase):
     recommend: Recommend | None = None
     add_sweep_status: int | None = None
 
+    @property
+    def battery(self) -> int | None:
+        """
+        Returns device battery level as a percentage.
+        """
+        return self.quantity
+
     @property
     def main_brush_time_left(self) -> int | None:
         """