bluetooth devices always show 100% charged battery

[robegue]

Regardless the true battery charge, any bluetooth connected device (I have tried with headphones, mouse, joystick) report 100% charge:

$ upower --dump

...
...
Device: /org/freedesktop/UPower/devices/mouse_dev_CC_60_9A_82_E6_F1
  native-path: /org/bluez/hci0/dev_CC_60_9A_82_E6_F1
  model: Dell WM527 Mouse
  serial: CC:60:9A:82:E6:F1
  power supply: no
  updated: gio 1 gen 1970, 01:00:00 (1626777065 seconds ago)
  has history: yes
  has statistics: no
  mouse
    present: yes
    rechargeable: no
    state: unknown
    warning-level: none
    percentage: 100%
    icon-name: 'battery-missing-symbolic'
...
...

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: bluez 5.60-0ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-23.24-generic 5.11.22
Uname: Linux 5.11.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu67
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Tue Jul 20 12:21:31 2021
InstallationDate: Installed on 2019-05-08 (804 days ago)
InstallationMedia: Kubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
InterestingModules: rfcomm bnep btusb bluetooth
MachineType: LENOVO 20KH006JIX
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.11.0-23-generic root=/dev/mapper/kubuntu--vg-root ro noquiet nosplash i915.modeset=1 psmouse.synaptics_intertouch=1
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/30/2020
dmi.bios.release: 1.48
dmi.bios.vendor: LENOVO
dmi.bios.version: N23ET73W (1.48 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KH006JIX
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.20
dmi.modalias: dmi:bvnLENOVO:bvrN23ET73W(1.48):bd04/30/2020:br1.48:efr1.20:svnLENOVO:pn20KH006JIX:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KH006JIX:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 6th
dmi.product.name: 20KH006JIX
dmi.product.sku: LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th
dmi.product.version: ThinkPad X1 Carbon 6th
dmi.sys.vendor: LENOVO
hciconfig:
 hci0: Type: Primary Bus: USB
  BD Address: D8:F2:CA:B8:F6:95 ACL MTU: 1021:4 SCO MTU: 96:6
  UP RUNNING PSCAN ISCAN
  RX bytes:1564009 acl:110206 sco:0 events:3015 errors:0
  TX bytes:612997 acl:208 sco:0 commands:2763 errors:0
mtime.conffile..etc.bluetooth.input.conf: 2021-07-20T12:23:28.421672

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.

Ubuntu 21.10 (impish) reached end-of-life on July 14, 2022.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in.