On 03/10/2019 13:07, Pavel Nikulin wrote: > Hello, > > I have a bt 4.2 mouse that has a battery service, but no battery > attribute visible in Bluez, Rapoo m550 using YiChip 1201. > > Is it even hypothetically possible that a device can have a battery > service, but no battery attribute? bluez filters it out. This is exactly what I am seeing. Reference to my post just two days ago: https://www.spinics.net/lists/linux-bluetooth/msg81438.html Greetings, bruno