Add support for battery level reporting

[Spektykles]

Can you add battery level reporting similar to Android and iOS? This may help you
sre/pulseaudio@d66b66d
In my case, Im using Audeze Cipher Bluetooth with aptX HD support. Tried bluetoothctl and found out it not using GATT.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[jaccc]

it would be useful

[berglh]

👍

[jtojnar]

Relevant https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/722

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[invidian]

I'm still interested in that feature.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[invidian]

Still 😄

[userofryzen]

I am interested too, but.. may be it's not a problem of that modules(?)

[jaccc]

this script works for me with some devices when correct port is found
https://github.com/TheWeirdDev/Bluetooth_Headset_Battery_Level/blob/master/bl_battery.py

[bhack]

Please check https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/722#note_503760

[EHfive]

Close, I think it's not our business