diff --git a/homeassistant/components/netatmo/climate.py b/homeassistant/components/netatmo/climate.py
index 1fb49d0c90d387c83cd0facf6846cf49b691ca2f..763ecdbc8ef51661b9729fa98040ee6758e7e0c7 100644
--- a/homeassistant/components/netatmo/climate.py
+++ b/homeassistant/components/netatmo/climate.py
@@ -506,7 +506,7 @@ class NetatmoThermostat(NetatmoBase, ClimateEntity):
         self._target_temperature = roomstatus["target_temperature"]
         self._preset = NETATMO_MAP_PRESET[roomstatus["setpoint_mode"]]
         self._hvac_mode = HVAC_MAP_NETATMO[self._preset]
-        self._battery_level = roomstatus.get("battery_level")
+        self._battery_level = roomstatus.get("battery_state")
         self._connected = True
 
         self._away = self._hvac_mode == HVAC_MAP_NETATMO[STATE_NETATMO_AWAY]
@@ -546,7 +546,7 @@ class NetatmoThermostat(NetatmoBase, ClimateEntity):
                 roomstatus["heating_status"] = self._boilerstatus
                 batterylevel = self._home_status.thermostats[
                     roomstatus["module_id"]
-                ].get("battery_level")
+                ].get("battery_state")
             elif roomstatus["module_type"] == NA_VALVE:
                 roomstatus["heating_power_request"] = self._room_status[
                     "heating_power_request"
@@ -557,16 +557,11 @@ class NetatmoThermostat(NetatmoBase, ClimateEntity):
                         self._boilerstatus and roomstatus["heating_status"]
                     )
                 batterylevel = self._home_status.valves[roomstatus["module_id"]].get(
-                    "battery_level"
+                    "battery_state"
                 )
 
             if batterylevel:
-                batterypct = interpolate(batterylevel, roomstatus["module_type"])
-                if (
-                    not roomstatus.get("battery_level")
-                    or batterypct < roomstatus["battery_level"]
-                ):
-                    roomstatus["battery_level"] = batterypct
+                roomstatus["battery_state"] = batterylevel
 
             return roomstatus
 
@@ -602,48 +597,6 @@ class NetatmoThermostat(NetatmoBase, ClimateEntity):
         return {**super().device_info, "suggested_area": self._room_data["name"]}
 
 
-def interpolate(batterylevel: int, module_type: str) -> int:
-    """Interpolate battery level depending on device type."""
-    na_battery_levels = {
-        NA_THERM: {
-            "full": 4100,
-            "high": 3600,
-            "medium": 3300,
-            "low": 3000,
-            "empty": 2800,
-        },
-        NA_VALVE: {
-            "full": 3200,
-            "high": 2700,
-            "medium": 2400,
-            "low": 2200,
-            "empty": 2200,
-        },
-    }
-
-    levels = sorted(na_battery_levels[module_type].values())
-    steps = [20, 50, 80, 100]
-
-    na_battery_level = na_battery_levels[module_type]
-    if batterylevel >= na_battery_level["full"]:
-        return 100
-    if batterylevel >= na_battery_level["high"]:
-        i = 3
-    elif batterylevel >= na_battery_level["medium"]:
-        i = 2
-    elif batterylevel >= na_battery_level["low"]:
-        i = 1
-    else:
-        return 0
-
-    pct = steps[i - 1] + (
-        (steps[i] - steps[i - 1])
-        * (batterylevel - levels[i])
-        / (levels[i + 1] - levels[i])
-    )
-    return int(pct)
-
-
 def get_all_home_ids(home_data: pyatmo.HomeData) -> list[str]:
     """Get all the home ids returned by NetAtmo API."""
     if home_data is None:
diff --git a/tests/components/netatmo/test_climate.py b/tests/components/netatmo/test_climate.py
index ecec2871df895ae56b33a497344d5f80a7b13f07..a3cad1e6d81b233f9ba25a494f441b09fc8266ee 100644
--- a/tests/components/netatmo/test_climate.py
+++ b/tests/components/netatmo/test_climate.py
@@ -1,8 +1,6 @@
 """The tests for the Netatmo climate platform."""
 from unittest.mock import Mock, patch
 
-import pytest
-
 from homeassistant.components.climate import (
     DOMAIN as CLIMATE_DOMAIN,
     SERVICE_SET_HVAC_MODE,
@@ -21,12 +19,7 @@ from homeassistant.components.climate.const import (
     PRESET_BOOST,
 )
 from homeassistant.components.netatmo import climate
-from homeassistant.components.netatmo.climate import (
-    NA_THERM,
-    NA_VALVE,
-    PRESET_FROST_GUARD,
-    PRESET_SCHEDULE,
-)
+from homeassistant.components.netatmo.climate import PRESET_FROST_GUARD, PRESET_SCHEDULE
 from homeassistant.components.netatmo.const import (
     ATTR_SCHEDULE_NAME,
     SERVICE_SET_SCHEDULE,
@@ -653,28 +646,6 @@ async def test_valves_service_turn_on(hass, climate_entry):
     assert hass.states.get(climate_entity_entrada).state == "auto"
 
 
-@pytest.mark.parametrize(
-    "batterylevel, module_type, expected",
-    [
-        (4101, NA_THERM, 100),
-        (3601, NA_THERM, 80),
-        (3450, NA_THERM, 65),
-        (3301, NA_THERM, 50),
-        (3001, NA_THERM, 20),
-        (2799, NA_THERM, 0),
-        (3201, NA_VALVE, 100),
-        (2701, NA_VALVE, 80),
-        (2550, NA_VALVE, 65),
-        (2401, NA_VALVE, 50),
-        (2201, NA_VALVE, 20),
-        (2001, NA_VALVE, 0),
-    ],
-)
-async def test_interpolate(batterylevel, module_type, expected):
-    """Test interpolation of battery levels depending on device type."""
-    assert climate.interpolate(batterylevel, module_type) == expected
-
-
 async def test_get_all_home_ids():
     """Test extracting all home ids returned by NetAtmo API."""
     # Test with backend returning no data