Check battery level of connected bluetooth device on linux

Question

How can I check the battery level of a connected bluetooth device? The device shows the battery level on Android so I\'m assuming the device supports the GATT-based Battery Serv

Answer 1

Here is a way to get battery level via pulseaudio logs with some hack. My bluetooth headset uses proprietary Apple HFP AT commands, HFP/A2DP protocols are handled by pulseaudio directly. It seems the only way to get those values is through pulse.