user@devuan-pinephone:~$ upower -d
Device: /org/freedesktop/UPower/devices/battery_axp20x_battery
  native-path:          axp20x-battery
  power supply:         yes
  updated:              Fri 30 May 2025 12:06:50 AM EEST (13 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    warning-level:       none
    energy:              0 Wh
    energy-empty:        0 Wh
    energy-full:         0 Wh
    energy-full-design:  0 Wh
    voltage-min-design:  3 V
    voltage-max-design:  4.2 V
    energy-rate:         0.9492 W
    voltage:             4.133 V
    charge-cycles:       N/A
    percentage:          98%
    technology:          lithium-ion
    icon-name:          'battery-full-symbolic'
  History (charge):
    1748552810	98.000	discharging
  History (rate):
    1748552810	0.949	discharging
    1748552780	0.945	discharging
    1748552750	3.331	discharging
    1748552740	0.000	discharging
    1748552725	0.987	charging

Device: /org/freedesktop/UPower/devices/line_power_axp20x_usb
  native-path:          axp20x-usb
  power supply:         yes
  updated:              Fri 30 May 2025 12:05:40 AM EEST (83 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    warning-level:       none
    online:              no
    icon-name:          'ac-adapter-symbolic'

Device: /org/freedesktop/UPower/devices/DisplayDevice
  power supply:         yes
  updated:              Fri 30 May 2025 12:06:50 AM EEST (13 seconds ago)
  has history:          no
  has statistics:       no
  battery
    present:             yes
    state:               discharging
    warning-level:       none
    energy:              0 Wh
    energy-full:         0 Wh
    energy-rate:         0.9492 W
    charge-cycles:       N/A
    percentage:          98%
    icon-name:          'battery-full-symbolic'

Daemon:
  daemon-version:  1.90.9
  on-battery:      yes
  lid-is-closed:   no
  lid-is-present:  no
  critical-action: Ignore
  
===

user@devuan-pinephone:~$ cat /sys/class/power_supply/axp20x-battery/uevent 
POWER_SUPPLY_NAME=axp20x-battery
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_ONLINE=1
POWER_SUPPLY_STATUS=Discharging
POWER_SUPPLY_CHARGE_BEHAVIOUR=auto
POWER_SUPPLY_VOLTAGE_NOW=4117000
POWER_SUPPLY_CURRENT_NOW=-314000
POWER_SUPPLY_CONSTANT_CHARGE_CURRENT=1200000
POWER_SUPPLY_CONSTANT_CHARGE_CURRENT_MAX=1200000
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_VOLTAGE_OCV=4149200
POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4200000
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3000000
POWER_SUPPLY_CAPACITY=97
POWER_SUPPLY_ENERGY_FULL_DESIGN=12000000
POWER_SUPPLY_ENERGY_EMPTY_DESIGN=0