diff --git a/custom_components/bluetti_bt/__init__.py b/custom_components/bluetti_bt/__init__.py
index ec16b3c..4ac4aac 100644
--- a/custom_components/bluetti_bt/__init__.py
+++ b/custom_components/bluetti_bt/__init__.py
@@ -2,14 +2,18 @@
 
 from __future__ import annotations
 
+import re
 import logging
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_ADDRESS, Platform
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import DeviceInfo
+
+from .const import DOMAIN, MANUFACTURER
 
 _LOGGER = logging.getLogger(__name__)
-PLATFORMS: [Platform] = []
+PLATFORMS: [Platform] = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
@@ -20,5 +24,25 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     if address is None:
         return False
 
+    # Setup platforms
+    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
+
     _LOGGER.error("Device address: %s", address)
     return True
+
+
+def device_info(entry: ConfigEntry) -> DeviceInfo:
+    """Device info."""
+    return DeviceInfo(
+        identifiers={(DOMAIN, entry.data.get(CONF_ADDRESS))},
+        name=entry.title,
+        manufacturer=MANUFACTURER,
+    )
+
+
+def get_unique_id(name: str, sensor_type: str | None = None):
+    """Generate an unique id."""
+    res = re.sub("[^A-Za-z0-9]+", "_", name).lower()
+    if sensor_type is not None:
+        return f"{sensor_type}.{res}"
+    return res
diff --git a/custom_components/bluetti_bt/config_flow.py b/custom_components/bluetti_bt/config_flow.py
index 8f46d3b..982e322 100644
--- a/custom_components/bluetti_bt/config_flow.py
+++ b/custom_components/bluetti_bt/config_flow.py
@@ -34,12 +34,12 @@ class BluettiConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         await self.async_set_unique_id(discovery_info.address)
         self._abort_if_unique_id_configured()
         self._discovery_info = discovery_info
-        self.context["title_placeholders"] = {
-            "name": discovery_info.name
-        }
+        self.context["title_placeholders"] = {"name": discovery_info.name}
         return await self.async_step_user()
 
-    async def async_step_user(self, user_input: dict[str, Any] | None = None) -> FlowResult:
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
         """Handle user input."""
 
         if user_input is not None:
@@ -59,6 +59,7 @@ class BluettiConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         else:
             current_addresses = self._async_current_ids()
             for discovery in async_discovered_service_info(self.hass):
+                address = discovery.address
                 if address in current_addresses or address in self._discovered_devices:
                     continue
                 self._discovered_devices[discovery.address] = discovery
diff --git a/custom_components/bluetti_bt/const.py b/custom_components/bluetti_bt/const.py
index 562fba7..a19d9a7 100644
--- a/custom_components/bluetti_bt/const.py
+++ b/custom_components/bluetti_bt/const.py
@@ -1,3 +1,4 @@
 """Constants for the Bluetti BT integration."""
 
 DOMAIN = "bluetti_bt"
+MANUFACTURER = "Bluetti"
diff --git a/custom_components/bluetti_bt/sensor.py b/custom_components/bluetti_bt/sensor.py
new file mode 100644
index 0000000..ccd3052
--- /dev/null
+++ b/custom_components/bluetti_bt/sensor.py
@@ -0,0 +1,80 @@
+"""Bluetti BT sensors."""
+
+from __future__ import annotations
+
+from datetime import timedelta
+import logging
+
+import async_timeout
+
+from homeassistant.components.sensor import SensorEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.const import CONF_ADDRESS
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.update_coordinator import (
+    CoordinatorEntity,
+    DataUpdateCoordinator,
+    UpdateFailed,
+)
+
+from . import device_info as dev_info, get_unique_id
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
+) -> None:
+    """Setup sensor entities."""
+
+    # Create coordinator for polling
+    coordinator = PollingCoordinator(hass)
+    await coordinator.async_config_entry_first_refresh()
+
+    # Generate device info
+    _LOGGER.error("Creating sensors for device %s", entry.data.get(CONF_ADDRESS))
+    device_info = dev_info(entry)
+    async_add_entities(Battery(coordinator, device_info))
+
+
+class PollingCoordinator(DataUpdateCoordinator):
+    """Polling coordinator."""
+
+    def __init__(self, hass):
+        """Initialize coordinator."""
+        super().__init__(
+            hass,
+            _LOGGER,
+            name="Bluetti polling coordinator",
+            update_interval=timedelta(seconds=10),
+        )
+
+    async def _async_update_data(self):
+        """Fetch data from API endpoint.
+
+        This is the place to pre-process the data to lookup tables
+        so entities can quickly look up their data.
+        """
+        self.logger.error("Polling data")
+
+
+class Battery(CoordinatorEntity, SensorEntity):
+    """Bluetti battery."""
+
+    def __init__(self, coordinator: PollingCoordinator, device_info: DeviceInfo):
+        """Init battery entity."""
+        super().__init__(coordinator)
+
+        self._attr_device_info = device_info
+        self._attr_name = f"{device_info.get('name')} Battery level"
+        self._attr_unique_id = get_unique_id(f"{device_info.get('name')} Battery level")
+        self._attr_unit_of_measurement = "%"
+        self._attr_device_class = "battery"
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        _LOGGER.error("Updating state of %s", self._attr_unique_id)
+        self.async_write_ha_state()
diff --git a/deploy.bat b/deploy.bat
new file mode 100644
index 0000000..bf48c37
--- /dev/null
+++ b/deploy.bat
@@ -0,0 +1 @@
+robocopy .\custom_components\bluetti_bt T:\custom_components\bluetti_bt /E