https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260214
Bug ID: 260214
Summary: [wine] acpi_battery should provide current/max battery
charge in Wh
Product: Base System
Version: 13.0-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
We currently have these power level related acpi_battery sysctls:
hw.acpi.battery.rate in mW
hw.acpi.battery.time in minutes
hw.acpi.battery.life in %
While discharging, the maximum battery capacity in Wh can be calculated from
those, as per below. But there is no way to determine current or maximum
battery capacity when not discharging, as time == -1, and rate could be 0.
Can't we have sysctls for that too? Windows and Linux and Mac provide this, and
Wine expects them.
Remaining capacity
= rate (mW) * time (minutes)
= (rate/1000 (Watts or Joules/second)) * (60*time (seconds))
= rate/1000*60*time (Joules)
= rate/1000*60*time/3600 (in Wh)
Total capacity = remaining capacity / life * 100 Wh
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