Homematic BidCos Device HM-Sec-SC-2 becomes unavailable but Battery Notes does not notice it

[jabdoa2]

Checklist

• I have added battery_notes: to my configuration.yaml and restarted.
• I have read the FAQ's.
• I have enabled debug logging for my installation.
• I have filled out the issue template to the best of my ability.
• This issue only contains 1 issue (if you have multiple issues, open one issue for each issue).
• This issue is not a duplicate issue of any previous issues..

Battery Notes Version

2.9.10

Describe the issue

My Homematic Bidcos HM-Sec-SC-2 ran out of battery before reporting battery low state. All entities of the device became unavailable in Home Assistant. However, binary_sensor.my_device_battery_plus_low did not become unavailable and reported the battery as normal.

Reproduction steps

1. Add HM-Sec-SC-2 to HA and install Battery Notes
2. Take battery out of HM-Sec-SC-2
3. Wait x days
4. Run https://github.com/andrew-codechimp/HA-Battery-Notes/blob/main/docs/community.md#check-battery-last-reported-daily automation
5. It should trigger report battery_notes_battery_not_reported but it does not currently do that
6. If would also assume that binary_sensor.my_device_battery_plus_low should become unavailable (but not sure it I am right about that)
7. Automation https://github.com/andrew-codechimp/HA-Battery-Notes/blob/main/docs/community.md#battery-not-reported should trigger

System Health details

System Information

version	core-2025.4.4
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
user	root
virtualenv	false
python_version	3.13.2
os_name	Linux
os_version	6.6.74-haos-raspi
arch	aarch64
timezone	Europe/Berlin
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
HACS Data	ok
GitHub API Calls Remaining	5000
Installed Version	2.0.5
Stage	running
Available Repositories	1698
Downloaded Repositories	15

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 15.2
update_channel	stable
supervisor_version	supervisor-2025.04.1
agent_version	1.7.2
docker_version	28.0.4
disk_total	28.5 GB
disk_used	14.8 GB
healthy	true
supported	true
host_connectivity	true
supervisor_connectivity	true
ntp_synchronized	true
virtualization
board	rpi4-64
supervisor_api	ok
version_api	ok
installed_addons	Terminal & SSH (9.17.0), File editor (5.8.0), eBUSd (25.1.0), Mosquitto broker (6.5.0), RaspberryMatic CCU (3.81.5.20250326), Piper (1.5.2), Whisper (2.5.0), ESPHome Device Builder (2025.4.1), Grocy (0.24.0), Nextcloud Backup (0.17.7), Speech-to-Phrase (1.3.0)

Dashboards

dashboards	9
resources	6
views	14
mode	storage

Network Configuration

adapters	lo (disabled), end0 (enabled, default, auto), hassio (disabled), docker0 (disabled), vethd2774b6 (disabled), vethed94587 (disabled), veth8f234b8 (disabled), veth69269c5 (disabled), vethcf46ee1 (disabled), veth89bd1d0 (disabled), vethd874d5e (disabled), veth6254dff (disabled), veth6d961c7 (disabled), veth3fe36ec (disabled), veth910aa7d (disabled), vethfe15bbc (disabled), veth99d1392 (disabled)
xxxx

Recorder

oldest_recorder_run	20. April 2025 um 19:02
current_recorder_run	28. April 2025 um 00:46
estimated_db_size	334.70 MiB
database_engine	sqlite
database_version	3.48.0

Spotify

api_endpoint_reachable	ok

Debug logs

Not really helpful unfortunately. Let me know if I should add it anyway.

Diagnostics dump

{
"home_assistant": {
"installation_type": "Home Assistant OS",
"version": "2025.4.4",
"dev": false,
"hassio": true,
"virtualenv": false,
"python_version": "3.13.2",
"docker": true,
"arch": "aarch64",
"timezone": "Europe/Berlin",
"os_name": "Linux",
"os_version": "6.6.74-haos-raspi",
"supervisor": "2025.04.1",
"host_os": "Home Assistant OS 15.2",
"docker_version": "28.0.4",
"chassis": "embedded",
"run_as_root": true
},
"custom_components": {
"powercalc": {
"documentation": "https://docs.powercalc.nl",
"version": "v1.17.11",
"requirements": [
"numpy>=1.21.1"
]
},
"battery_notes": {
"documentation": "https://andrew-codechimp.github.io/HA-Battery-Notes/",
"version": "2.9.10",
"requirements": []
},
"zha_toolkit": {
"documentation": "https://github.com/mdeweerd/zha-toolkit",
"version": "v1.1.27",
"requirements": [
"aiofiles>=0.4.0",
"pytz>=2016.10"
]
},
"grocy": {
"documentation": "https://github.com/custom-components/grocy",
"version": "2025.2.2",
"requirements": [
"pygrocy2==2.4.0"
]
},
"hacs": {
"documentation": "https://hacs.xyz/docs/use/",
"version": "2.0.5",
"requirements": [
"aiogithubapi>=22.10.1"
]
},
"adaptive_lighting": {
"documentation": "https://github.com/basnijholt/adaptive-lighting#readme",
"version": "1.25.0",
"requirements": [
"ulid-transform"
]
},
"openwrt": {
"documentation": "https://github.com/kvj/hass_openwrt",
"version": "0.2.1",
"requirements": []
},
"homematicip_local": {
"documentation": "https://github.com/sukramj/custom_homematic",
"version": "1.83.0",
"requirements": [
"hahomematic==2025.4.1"
]
},
"waste_collection_schedule": {
"documentation": "https://github.com/mampfes/hacs_waste_collection_schedule#readme",
"version": "2.7.0",
"requirements": [
"icalendar",
"icalevents>=0.1.26,!=0.1.28",
"beautifulsoup4",
"lxml",
"pycryptodome",
"pypdf"
]
}
},
"integration_manifest": {
"domain": "battery_notes",
"name": "Battery Notes",
"codeowners": [
"andrew-codechimp"
],
"config_flow": true,
"documentation": "https://andrew-codechimp.github.io/HA-Battery-Notes/",
"integration_type": "device",
"iot_class": "calculated",
"issue_tracker": "https://github.com/andrew-codechimp/ha-battery-notes/issues",
"version": "2.9.10",
"is_built_in": false,
"overwrites_built_in": false
},
"setup_times": {
"null": {
"setup": 0.39192929200362414
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},
"data": {
"entry": {
"created_at": "2025-01-11T10:26:00.126999+00:00",
"data": {
"battery_low_template": "{{ states('binary_sensor.my_device_battery') == "on" }}",
"battery_low_threshold": 0,
"battery_quantity": 2,
"battery_type": "LR44",
"device_id": "0d6a0b8aa1bee3cf3f14f6385e1da14a",
"device_name": "my_device",
"manufacturer": "eQ-3",
"model": "HM-Sec-SC-2",
"model_id": [
null
]
},
"discovery_keys": {},
"disabled_by": null,
"domain": "battery_notes",
"entry_id": "01JHAECCSYKHHXHYY761KA2EEV",
"minor_version": 1,
"modified_at": "2025-04-30T16:37:24.689757+00:00",
"options": {},
"pref_disable_new_entities": false,
"pref_disable_polling": false,
"source": "integration_discovery",
"subentries": [],
"title": "xxxx",
"unique_id": "bn_0d6a0b8aa1bee3cf3f14f6385e1da14a",
"version": 2
},
"device": {
"manufacturer": "eQ-3",
"model": "HM-Sec-SC-2",
"model_id": null,
"hw_version": null
}
}
}

[andrew-codechimp]

Hi, could you check the battery_plus sensor's attributes and see if the Battery Last Reported is old enough?
I'm not sure what integration the HM-Sec-SC-2 is added by, but it could potentially be updating the battery level even when unavailable.

[jabdoa2]

Hi, could you check the battery_plus sensor's attributes and see if the Battery Last Reported is old enough? I'm not sure what integration the HM-Sec-SC-2 is added by, but it could potentially be updating the battery level even when unavailable.

Where would I find that? I fail to find that at all.

binary_sensor.my_device_battery_plus_low attributes:

battery_low_threshold: 10
battery_quantity: 2
battery_type: LR44
battery_type_and_quantity: 2× LR44
device_class: battery
friendly_name: my_device Battery low

Original entity:

interface_id: RaspberryMatic-BidCos-RF
address: LEQxxxxxx:0
model: HM-Sec-SC-2
parameter: LOWBAT
function: null
value_state: valid
device_class: battery
friendly_name: my_device Battery

I fail to find any "Last Reported" attribute anywhere.

[andrew-codechimp]

You should have a Battery+ sensor, the last reported should be an attribute of that, this only appears if your device has a battery percentage.
The last reported only tracks the reported battery percentage.

[jabdoa2]

Oh ok the sensor does not have any percentage. So it does not work by design in that case?

Question: Should we change the low battery condition to include "Unavailable" as low? Or even everything not equal "Off"?

[andrew-codechimp]

Glad we got to the bottom of why it wasn't showing/reporting.
It did start me thinking on why I couldn't look at the battery low, I'll have to look at the code more to see if there's a reason not to but it would seem doable for these types of devices, I'll add it to my list of things to improve.