diff --git a/custom_components/xiaoxiang_bms/coordinator.py b/custom_components/xiaoxiang_bms/coordinator.py
index 972b366..ba5886e 100644
--- a/custom_components/xiaoxiang_bms/coordinator.py
+++ b/custom_components/xiaoxiang_bms/coordinator.py
@@ -50,8 +50,7 @@ class BmsCoordinator(DataUpdateCoordinator[dict]):
         return device
 
     async def async_setup(self) -> None:
-        """Connect to the BMS. Called once during config entry setup."""
-        await self._handler.connect(self._get_ble_device())
+        """No-op — connection is established lazily on the first poll."""
 
     async def async_teardown(self) -> None:
         """Disconnect cleanly. Called on entry unload."""