Thank you for your 2 informative posts. I had ZHA and moved the Tradfri remotes from Hue bridge to ZHA on Friday. On Saturday, the batteries were crazy low/drained.
Thanks to your posts, I flashed the Sonoff USB and moved to Zigbee2MQTT, plus I’m upgrading the firmwares (I had 2017-2019 firmwares from when I bought all the bulbs & remotes and Hue bridge doesn’t upgrade them). Batteries look promising (although it was only yesterday, but no more 1-day drains at least).
Here’s a graph. The drops are the firmware upgrades, and then they mostly recover.
PS: I was scared of Zigbee2MQTT since ZHA is so native and simple. It took mere minutes watching the recent Mark Watt video on the Sonoff USB and it’s amazing, so many more options than ZHA (options, upgrade firmware manually, etc.) (not bashing ZHA, I love it too!).