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Battery Monitor

DomoticaFacile/battery_monitor · vv1.2.4

HACSCalculated

Custom integration to monitor all battery entities present in Home Assistant and have an immediate overview.

In Apple Home through HomeKit Bridge

What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.

EntityShows up asNote
sensorSensor (temperature, humidity, air quality…)

What people report

Battery Monitor handles most batteries automatically; new IKEA Matter devices showed wrong percentages until a patch.

  • Works3
DeviceIn Home AssistantIn Apple HomeWhat they saidSource
IKEA BILRESA dual buttonWorks LocalWrong battery percentage fixed in 1.0.2
Saved copy
Dear developers, I just integrated 3 new Ikea Matter devices, and Battery monitor is showing the wrong battery percentage: 1) BILRESA dual button (32769) from IKEA of Sweden Firmware: 1.8.5 - Hardware: P2.0 2) MYGGBETT door/window sensor (32775) from IKEA of Sweden Firmware: 1.0.9 - Hardware: P2.0 3) MYGGSPRAY wrlss mtn sensor (12288) from IKEA of Sweden Firmware: 1.0.7 - Hardware: P2.0 The devices detect and shows 100% for all devices, Battery Monitor detect and shows 1% or 3% Can you pls check ? Do you need further from my side? Thanks & rgds Mauro Here below the logs of Battery Monitor: …

Excerpt saved from GitHub on 2026-10-23.

Issue #3 · 2026-03
IKEA MYGGBETT door/window sensorWorks LocalWrong battery percentage fixed in 1.0.2
Saved copy
Dear developers, I just integrated 3 new Ikea Matter devices, and Battery monitor is showing the wrong battery percentage: 1) BILRESA dual button (32769) from IKEA of Sweden Firmware: 1.8.5 - Hardware: P2.0 2) MYGGBETT door/window sensor (32775) from IKEA of Sweden Firmware: 1.0.9 - Hardware: P2.0 3) MYGGSPRAY wrlss mtn sensor (12288) from IKEA of Sweden Firmware: 1.0.7 - Hardware: P2.0 The devices detect and shows 100% for all devices, Battery Monitor detect and shows 1% or 3% Can you pls check ? Do you need further from my side? Thanks & rgds Mauro Here below the logs of Battery Monitor: …

Excerpt saved from GitHub on 2026-10-23.

Issue #3 · 2026-03
IKEA MYGGSPRAY wireless motion sensorWorks LocalWrong battery percentage fixed in 1.0.2
Saved copy
Dear developers, I just integrated 3 new Ikea Matter devices, and Battery monitor is showing the wrong battery percentage: 1) BILRESA dual button (32769) from IKEA of Sweden Firmware: 1.8.5 - Hardware: P2.0 2) MYGGBETT door/window sensor (32775) from IKEA of Sweden Firmware: 1.0.9 - Hardware: P2.0 3) MYGGSPRAY wrlss mtn sensor (12288) from IKEA of Sweden Firmware: 1.0.7 - Hardware: P2.0 The devices detect and shows 100% for all devices, Battery Monitor detect and shows 1% or 3% Can you pls check ? Do you need further from my side? Thanks & rgds Mauro Here below the logs of Battery Monitor: …

Excerpt saved from GitHub on 2026-10-23.

Issue #3 · 2026-03

Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.

How it connects

Calculated

Works out its values from other data rather than talking to a device.

Details

Installs (analytics)501 (0.07%)
GitHub stars37
Latest versionv1.2.4 (2026-10-20)
Set up in the UIYes
Maintainers@DomoticaFacile
LicenseMIT

In ReReHome

Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.

Bridges get their own settings page listing the accessories behind them.