diff --git a/homeassistant/components/powerwall/sensor.py b/homeassistant/components/powerwall/sensor.py
index 24aeb9e4f4e..9e17cd32e9c 100644
--- a/homeassistant/components/powerwall/sensor.py
+++ b/homeassistant/components/powerwall/sensor.py
@@ -113,12 +113,6 @@ POWERWALL_INSTANT_SENSORS = (
 )
 
 
-def _get_battery_charge(battery_data: BatteryResponse) -> float:
-    """Get the current value in %."""
-    ratio = float(battery_data.energy_remaining) / float(battery_data.capacity)
-    return round(100 * ratio, 1)
-
-
 BATTERY_INSTANT_SENSORS: list[PowerwallSensorEntityDescription] = [
     PowerwallSensorEntityDescription[BatteryResponse, int](
         key="battery_capacity",
@@ -202,16 +196,6 @@ BATTERY_INSTANT_SENSORS: list[PowerwallSensorEntityDescription] = [
         suggested_display_precision=1,
         value_fn=lambda battery_data: battery_data.energy_remaining,
     ),
-    PowerwallSensorEntityDescription[BatteryResponse, float](
-        key="charge",
-        translation_key="charge",
-        entity_category=EntityCategory.DIAGNOSTIC,
-        state_class=SensorStateClass.MEASUREMENT,
-        device_class=SensorDeviceClass.BATTERY,
-        native_unit_of_measurement=PERCENTAGE,
-        suggested_display_precision=0,
-        value_fn=_get_battery_charge,
-    ),
     PowerwallSensorEntityDescription[BatteryResponse, str](
         key="grid_state",
         translation_key="grid_state",
diff --git a/tests/components/powerwall/test_sensor.py b/tests/components/powerwall/test_sensor.py
index 11b4f25e4a3..2de79a6a6dc 100644
--- a/tests/components/powerwall/test_sensor.py
+++ b/tests/components/powerwall/test_sensor.py
@@ -157,7 +157,6 @@ async def test_sensors(
         float(hass.states.get("sensor.mysite_tg0123456789ab_battery_remaining").state)
         == 14.715
     )
-    assert float(hass.states.get("sensor.mysite_tg0123456789ab_charge").state) == 100.0
     assert (
         str(hass.states.get("sensor.mysite_tg0123456789ab_grid_state").state)
         == "grid_compliant"
@@ -187,7 +186,6 @@ async def test_sensors(
         float(hass.states.get("sensor.mysite_tg9876543210ba_battery_remaining").state)
         == 15.137
     )
-    assert float(hass.states.get("sensor.mysite_tg9876543210ba_charge").state) == 100.0
     assert (
         str(hass.states.get("sensor.mysite_tg9876543210ba_grid_state").state)
         == "grid_compliant"