Arch Linux

nullboi

Member

Registered: 2022-07-16

Posts: 1

ThinkPad T450s external battery not being used.

This might not be an Arch specific issue, as the issue started after switching to Fedora and then back to Arch.

uname

Linux <hostname> 5.15.55-1-lts #1 SMP Fri, 15 Jul 2022 11:28:54 +0000 x86_64 GNU/Linux

Battery info from acpi on A/C:

Battery 0: Not charging, 99%
Battery 0: design capacity 1890 mAh, last full capacity 1584 mAh = 83%
Battery 1: Not charging, 98%
Battery 1: design capacity 3997 mAh, last full capacity 3997 mAh = 100%

Battery info from acpi off A/C:

Battery 0: Discharging, 99%, 04:56:40 remaining
Battery 0: design capacity 1922 mAh, last full capacity 1610 mAh = 83%
Battery 1: Not charging, 98%
Battery 1: design capacity 3998 mAh, last full capacity 3998 mAh = 100%

From upower -d:

Device: /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          BAT0
  vendor:               SONY
  model:                45N1111
  serial:               16541
  power supply:         yes
  updated:              Sat 16 Jul 2022 03:32:09 PM CDT (12 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    warning-level:       none
    energy:              19.27 Wh
    energy-empty:        0 Wh
    energy-full:         19.44 Wh
    energy-full-design:  23.2 Wh
    energy-rate:         7.895 W
    voltage:             11.981 V
    charge-cycles:       N/A
    time to empty:       2.4 hours
    percentage:          99%
    capacity:            83.7931%
    technology:          lithium-polymer
    icon-name:          'battery-full-symbolic'
  History (rate):
    1658003529	7.895	discharging
    1658003499	6.975	discharging
    1658003468	3.934	discharging
    1658003466	2.782	discharging
    1658003465	0.331	discharging

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          BAT1
  vendor:               SONY
  model:                45N1130
  serial:               13458
  power supply:         yes
  updated:              Sat 16 Jul 2022 03:32:09 PM CDT (12 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               fully-charged
    warning-level:       none
    energy:              47.93 Wh
    energy-empty:        0 Wh
    energy-full:         48.84 Wh
    energy-full-design:  48.84 Wh
    energy-rate:         0 W
    voltage:             12.215 V
    charge-cycles:       N/A
    percentage:          98%
    capacity:            100%
    technology:          lithium-polymer
    icon-name:          'battery-full-charged-symbolic'

Things I have tried:
- Disabled internal battery in BIOS, will not power on until A/C is connected
- Disabled internal battery and removed external battery, held power button for 2 minutes
- Disabled internal battery and removed external battery, held pinhole button on bottom of laptop for 15 seconds (from: https://youtu.be/hF2tviRT_kY)
- Ran the Lenovo Diagnostic tool (from BIOS), all tests passed
- Updated BIOS from 1.1x to 1.37

The fact that it won't even boot with only external battery makes me think that it's a hardware issue, but the external battery being detected and showing its percentage gives me hope that it might just be a driver or something.