Develco HESZB-120 high battery drain

[klickfisch]

What happened?

I'm using a HESZB-120 in my kitchen. The device itself work pretty solid, but the battery drain is high. The estimated lifetime should be 5 years, but mine will last only 3-4 months.
The device has a high lqi with over 150 and also enough router nearby.

I also contacted the Develco support:
"We received several similar observations regarding this device on the Zigbee2MQTT driver.
I would suspect the driver to be pulling data from the device too often, which can cause increased battery usage.
Another reason here could be a network – as if the device loses connection to the gateway – it will constantly search for a network to join.
Such behavior will naturally, and significantly increase power consumption.
You could try to move the device closer to the gateway for the test."

"Both Heat and Smoke sensors use the same firmware. I would then suspect the driver for HESZB-120 to be pulling something from the device too often."

What did you expect to happen?

Not to change the battery every 3-4 months.

How to reproduce it (minimal and precise)

Removed the device, updated the firmware, rebooted all.
I'm using also Develco SMSZB-120 wito no problems.

Zigbee2MQTT version

1.39.0 and earlier

Adapter firmware version

20230507

Adapter

CC2652 - HamGeek POE Zigbee 3.0

Setup

HA OS on Synology VM

Debug log

No response

[sjorge]

Mine drained the battery like crazy after doing the OTA last month. Removing and repairing fixed that for me.
It seemed based on my wireshard dump that they somehow lost the TC key and would continuesly drop, rejoin the network. After a remove, restart z2m, join that seems to have fixed it. I also further tweaked the reporting a bit.

To cut down on even more traffic.