Implement psutil.sensors_battery()

[giampaolo]

On Linux this is exposed under /sys/class/power_supply/BAT0/ and from there we can retrieve battery:

• usage (percent)
• energy_now
• energy_full
• name
• manufacturer
• voltage_now
• voltage_min

Python module: https://github.com/Kentzo/Power

For Windows:

• syscall: https://msdn.microsoft.com/en-us/library/aa394074(v=vs.85).aspx
• retrievable info: http://www.howtogeek.com/217010/how-to-generate-a-battery-health-report-on-windows-8-or-windows-10/

It MAY be good to also add an estimate of the remaining time.

As for OSX and BSD I haven't looked into it but I'm OK also by supporting only Linux and Windows.

Progress

branch: https://github.com/giampaolo/psutil/compare/955-battery-sensors

• Linux
• Windows
• FreeBSD

[giampaolo]

Merged as #963

[Sygyzmundovych]

I found this peice of code for Mac: http://stevelosh.com/blog/2010/02/my-extravagant-zsh-prompt/#my-right-prompt-battery-capacity