I just noticed that one of my IKEA VALLHORN motion sensors doesn’t report the battery type from the device:
Both running exactly same FW level (FW 1.0.64) and all settings are exactly same on both.
(FW checked/updated with HA)
Does anyone know if this is something I can addmyself and in that case how?
In my opinion the only thing you can try is, to delete the sensor and add it again, maybe even with a Homey restart in between.
But in general my recommendation is to report this bug to Athom.