Re: Issue with notebook (maybe the battery?)

From	David Wright <deblis@lionunicorn.co.uk>
Newsgroups	linux.debian.user
Subject	Re: Issue with notebook (maybe the battery?)
Date	2017-05-25 03:30 +0200
Message-ID	<tKPLb-1uq-7@gated-at.bofh.it> (permalink)
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On Wed 24 May 2017 at 21:50:20 (-0300), Daniel Bareiro wrote:

> When you talk about "the numbers", do you mean to see by the console the
> values that are obtained for both batteries (voltage, for example) to
> make a comparison?

Yes, the bash function I use is:

battery () 
{ 
    local BATTERYFILE="/sys/class/power_supply/BAT0/uevent";
    [ ! -r $BATTERYFILE ] && printf '%s\n' "$BATTERYFILE not found!" && return 1;
    date +%Y-%m-%d-%H-%M-%S;
    cat $BATTERYFILE;
    local FILEBATNOW="/sys/class/power_supply/BAT0/charge_now";
    local FILEBATPREV="/sys/class/power_supply/BAT0/charge_full";
    local CHARGE=$(( 100 * $(< $FILEBATNOW) / $(< $FILEBATPREV) ));
    [ $CHARGE -lt 100 ] && printf '%s\n' "Charge: $CHARGE%"
}

AIUI uevent gives you the lot, which varies by model etc.
so just   cat /sys/class/power_supply/BAT0/uevent
should do it, with and without the power supply connected.

(I run a slightly more sophisticated version that also
reads the CPU temperature, has error trapping, and changes
the root window colour according to battery state and,
if frying, temperature.)

Cheers,
David.

Thread

Re: Issue with notebook (maybe the battery?) Daniel Bareiro <daniel-listas@gmx.net> - 2017-05-24 15:10 +0200
  Re: Issue with notebook (maybe the battery?) Fungi4All <fungilife@protonmail.com> - 2017-05-24 17:20 +0200
    Re: Issue with notebook (maybe the battery?) David Wright <deblis@lionunicorn.co.uk> - 2017-05-25 03:00 +0200
  Re: Issue with notebook (maybe the battery?) David Wright <deblis@lionunicorn.co.uk> - 2017-05-25 02:30 +0200
    Re: Issue with notebook (maybe the battery?) Daniel Bareiro <daniel-listas@gmx.net> - 2017-05-25 03:00 +0200
      Re: Issue with notebook (maybe the battery?) David Wright <deblis@lionunicorn.co.uk> - 2017-05-25 03:30 +0200
        Re: Issue with notebook (maybe the battery?) Daniel Bareiro <daniel-listas@gmx.net> - 2017-05-28 03:00 +0200
          Re: Issue with notebook (maybe the battery?) David Wright <deblis@lionunicorn.co.uk> - 2017-06-02 21:40 +0200

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