From 29fb83e98bfe23f7c3e3ffcc208fa21b28f39db1 Mon Sep 17 00:00:00 2001
From: Bouwe Westerdijk <11290930+bouwew@users.noreply.github.com>
Date: Mon, 16 Sep 2024 11:06:25 +0200
Subject: [PATCH] Implement battery state binary sensor in Plugwise (#126020)

---
 homeassistant/components/plugwise/binary_sensor.py | 7 +++++++
 homeassistant/components/plugwise/strings.json     | 3 +++
 tests/components/plugwise/test_init.py             | 9 ++++++---
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/homeassistant/components/plugwise/binary_sensor.py b/homeassistant/components/plugwise/binary_sensor.py
index 4b251d20a02..fb271ea7264 100644
--- a/homeassistant/components/plugwise/binary_sensor.py
+++ b/homeassistant/components/plugwise/binary_sensor.py
@@ -9,6 +9,7 @@ from typing import Any
 from plugwise.constants import BinarySensorType
 
 from homeassistant.components.binary_sensor import (
+    BinarySensorDeviceClass,
     BinarySensorEntity,
     BinarySensorEntityDescription,
 )
@@ -31,6 +32,12 @@ class PlugwiseBinarySensorEntityDescription(BinarySensorEntityDescription):
 
 
 BINARY_SENSORS: tuple[PlugwiseBinarySensorEntityDescription, ...] = (
+    PlugwiseBinarySensorEntityDescription(
+        key="low_battery",
+        translation_key="low_battery",
+        device_class=BinarySensorDeviceClass.BATTERY,
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
     PlugwiseBinarySensorEntityDescription(
         key="compressor_state",
         translation_key="compressor_state",
diff --git a/homeassistant/components/plugwise/strings.json b/homeassistant/components/plugwise/strings.json
index f74fc036e2a..c09323f458b 100644
--- a/homeassistant/components/plugwise/strings.json
+++ b/homeassistant/components/plugwise/strings.json
@@ -30,6 +30,9 @@
   },
   "entity": {
     "binary_sensor": {
+      "low_battery": {
+        "name": "Battery state"
+      },
       "compressor_state": {
         "name": "Compressor state"
       },
diff --git a/tests/components/plugwise/test_init.py b/tests/components/plugwise/test_init.py
index 26aedf864dc..46ef7b89d09 100644
--- a/tests/components/plugwise/test_init.py
+++ b/tests/components/plugwise/test_init.py
@@ -40,6 +40,9 @@ TOM = {
         "location": "f871b8c4d63549319221e294e4f88074",
         "model": "Tom/Floor",
         "name": "Tom Zolder",
+        "binary_sensors": {
+            "low_battery": False,
+        },
         "sensors": {
             "battery": 99,
             "temperature": 18.6,
@@ -221,7 +224,7 @@ async def test_update_device(
                 entity_registry, mock_config_entry.entry_id
             )
         )
-        == 29
+        == 31
     )
     assert (
         len(
@@ -244,7 +247,7 @@ async def test_update_device(
                     entity_registry, mock_config_entry.entry_id
                 )
             )
-            == 34
+            == 37
         )
         assert (
             len(
@@ -271,7 +274,7 @@ async def test_update_device(
                     entity_registry, mock_config_entry.entry_id
                 )
             )
-            == 29
+            == 31
         )
         assert (
             len(