Battery devices stuck in REQUEST_NIF

Thanks a lot,
I will try and play a bit with the PIRs and see if I can get them properly detected.
But again this lifeline association is necessary, correct?
and always assigns the controller and not another routing node?

Correct.
It is usually specified in the database entry for the device I believe Z-Wave Plus always requires Association Group 1 to be Lifeline.

The current home for the binding database is here.