Obtaining Battery Status for Headset/Controllers in AirLink Mode

I'm currently developing a VR game in Unity,

and during gameplay, I need to send specific information through an API to a local Python program, which then forwards it to a backend server for monitoring.

Now, I want to monitor the battery status of VR devices, but I can't find a clear answer.

Please let me know if there is a way to obtain the battery status either in Unity or Python?