How to show bluetooth headphone battery in macos?

Hovering over the device doesn't show the battery level. When connected to the iPhone, I was able to get the battery level in the widgets screen.

How do I know when I have to charge the headphones?

Solution 1:

You can write your custom script on these lines

https://romig.dev/blog/mac-os-quirks-bluetooth-device-battery-low/ using ioreg I/O Registry, code for a implementation is available here on Github https://github.com/aromig/scripts/tree/master/check_battery

You can also use plugins like Akku https://github.com/jariz/Akku

Solution 2:

This is not something built into macOS.

To get alerts and notifications about your Bluetooth devices’ battery status, you need a third party utility like MenuBar Stats.

Solution 3:

MacOS Monterey now supports 3rd party Bluetooth headsets by itself. This was the reason for plugins like Akku being discontinued.

Try to upgrade your OS.