New to HA.
When I try to expose Motion detection and Battery level to Google Assistant it is not possible, HA says its not supported.
I think that is old information, since Google Assistant nowdays do support Motion detection and Battery level.
Smart Home OccupancySensing Trait Schema
Cloud-to-cloud | Google Home Developers
Smart Home EnergyStorage Trait Schema
Cloud-to-cloud | Google Home Developers
Please update this integration.