Check this out. After fully charging from this morning?

[chris@f28h ~]$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          BAT1
  vendor:               Hewlett-Packard
  model:                PABAS0241231
  serial:               41167
  power supply:         yes
  updated:              Thu 17 May 2018 04:59:54 PM MDT (14 seconds ago)
  has history:          yes
  has statistics:       yes
    present:             yes
    rechargeable:        yes
    state:               fully-charged
    warning-level:       none
    energy:              29.1522 Wh
    energy-empty:        0 Wh
    energy-full:         29.1522 Wh
    energy-full-design:  38.115 Wh
    energy-rate:         0 W
    voltage:             8.671 V
    percentage:          100%
    capacity:            76.4848%
    technology:          lithium-ion
    icon-name:          'battery-full-charged-symbolic'

[chris@f28h ~]$

How does capacity go from 82.68% this morning to 76.48% this
afternoon? This laptop is ~18 months old.

[root@f28h ~]# cat /sys/class/power_supply/BAT1/cycle_count

That's obviously bogus. I'd say 75% of the time I'm working on power,
the other 25% or less of the time it's running on battery. It gets
battery usage once a week or so.

Chris Murphy
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