How to get the battery info of a bluetooth device?

Question

I've searched a lot and didn't find the proper solution for the problem I'm facing. I wonder if is there a way to see the battery level of a headset connected via bluetooth. I've checked the output of bluetoothctl already and it shows me the following information:

[EDIFIER W800BT]# info
Device 04:FE:A1:E9:70:DE (public)
        Name: EDIFIER W800BT
        Alias: EDIFIER W800BT
        Class: 0x00240404
        Icon: audio-card
        Paired: yes
        Trusted: yes
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: Headset                   (00001108-0000-1000-8000-00805f9b34fb)
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: Handsfree                 (0000111e-0000-1000-8000-00805f9b34fb)
[EDIFIER W800BT]# show
Controller 74:40:BB:FE:F3:7C (public)
        Name: kennet
        Alias: kennet
        Class: 0x001c010c
        Powered: yes
        Discoverable: yes
        Pairable: yes
        UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: OBEX File Transfer        (00001106-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: OBEX Object Push          (00001105-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: IrMC Sync                 (00001104-0000-1000-8000-00805f9b34fb)
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: Vendor specific           (00005005-0000-1000-8000-0002ee000001)
        UUID: Message Notification Se.. (00001133-0000-1000-8000-00805f9b34fb)
        UUID: Phonebook Access Server   (0000112f-0000-1000-8000-00805f9b34fb)
        UUID: Message Access Server     (00001132-0000-1000-8000-00805f9b34fb)
        UUID: Headset                   (00001108-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0530
        Discovering: no

Additionally,

➜  ~ hcitool dev
Devices:
        hci0    74:40:BB:FE:F3:7C

Also, I found nothing on:

➜  ~ ls -l /sys/class/bluetooth/hci0/power/
total 0
-rw-r--r-- 1 root root 4096 dez 27 19:11 async
-rw-r--r-- 1 root root 4096 dez 27 19:11 autosuspend_delay_ms
-rw-r--r-- 1 root root 4096 dez 27 19:11 control
-r--r--r-- 1 root root 4096 dez 27 19:11 runtime_active_kids
-r--r--r-- 1 root root 4096 dez 27 19:11 runtime_active_time
-r--r--r-- 1 root root 4096 dez 27 19:11 runtime_enabled
-r--r--r-- 1 root root 4096 dez 27 19:11 runtime_status
-r--r--r-- 1 root root 4096 dez 27 19:11 runtime_suspended_time
-r--r--r-- 1 root root 4096 dez 27 19:11 runtime_usage

@Pilot6 Because it reports when I connect to my android device. Am I wrong to think it would report connecting to my computer? — Kennet Emerson, Dec 27 '20 at 22:18
Does this answer your question? Check Bluetooth headphones battery status in Linux — Pilot6, Dec 27 '20 at 22:20
I've tried the upower --dump also, and it doesn't report the battery there. And I'm trying to make the python script works to report back. — Kennet Emerson, Dec 27 '20 at 22:29
@Pilot6 The script doesn't work also. I've also tried the 30 ports suggested in the README.md of the github project. :/ — Kennet Emerson, Dec 27 '20 at 22:57
I've found that I need to disconnect from my computer before check the battery, but the script turns off my bluetooth headset when I execute it. — Kennet Emerson, Dec 27 '20 at 23:05

score 1 · Answer 1 · answered Apr 14 '22 at 16:13

1

Using this extension following the install guide worked for me. https://github.com/MichalW/gnome-bluetooth-battery-indicator

answered Apr 14 '22 at 16:13

Emerson Barros

11

3

While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - From Review – David Apr 15 '22 at 07:03

How to get the battery info of a bluetooth device?

1 Answers1