Hi Guys
Using ZHA, and several zigbee battery devices (including quite a few Sonoff temp/humidity sensors).
Devices all worked fine after installation - what seems a long time ago, however after replacing batteries, they work for 5-6 hours then go unavailable.
When I changed batteries I started discovery and pressed the device switch to reset and saw the device being discovered (with the original identity).
Any ideas as why they go unavailable after that period of time? I have ruled out bad batteries.
Thanks in advance