rusty-battery

CLI tool which notifies you when laptop battery reaches a threshold.

Why should you use rusty-battery?

If you aren't able to set start/stop charge threshold (for example via TLP) but would still like to make sure that your battery won't exceed your preferred threshold. rusty-battery can let you know when your battery reached the threshold by showing a desktop notification and optionally pinging your KDE Connect devices.

Features

• notify
• batteries
• kde-connect-devices

notify

Notify whenever battery percentage exceeds the given threshold.

USAGE: rusty-battery notify [FLAGS] [OPTIONS]

FLAGS:

-v, --verbose
        Activates verbose mode

OPTIONS:

--kde-connect <kde-connect-names>...
        KDE Connect device names

        If this value is not present, KDE Connect will not be used.

        If this value is empty, all of the KDE Connect devices will be pinged.

-m, --model <model>
        Battery model name

        If this value is omitted and only battery device is found for the current device, that one will be used.

        Otherwise, please use the `batteries` subcommand to get a list of all battery devices to get the model of
        the wanted battery device which should be monitored.

    --refresh-secs <refresh-secs>
        Number of seconds to wait before refreshing battery device data

        After every battery device refresh, its data will be checked. Notifications will be sent everytime they
        should be, based on the new refreshed battery device data. [default: 30]

-t, --threshold <threshold>
        Battery charge threshold

        Whenever the chosen battery device reaches this charge threshold and will be charging, notifications will be
        sent, alerting that the charger should be unplugged. [default: 80]

batteries

List all available batteries of the current device

USAGE: rusty-battery batteries [FLAGS]

FLAGS:

-v, --verbose    Activates verbose mode

kde-connect-devices

List all available KDE Connect devices

USAGE: rusty-battery kde-connect-devices [FLAGS]

FLAGS:

-v, --verbose    Activates verbose mode

Installation

From crates.io

sh cargo install rusty-battery

From source

1. Clone the repository

sh git clone git@github.com:kucera-lukas/rusty-battery.git

1. Change directory

sh cd rusty-battery

1. Install with cargo

sh cargo install --path .

From release page

Download a binary of the latest release and move it to a directory which is in your $PATH. You may need to change the binary's permissions by running:

sh chmod +x rusty-battery

If there are any problems with the pre-compiled binaries, file an issue.

Usage tips

This tool is best used when set up as a background task.

Setup with cron

1. Open crontab

sh crontab -e

1. Paste in @reboot rusty-battery notify [YOUR OPTIONS]
2. Save and exit the text editor, you should see crontab: installing new crontab in your terminal
3. Reboot the system

sh reboot

Logging

1. Choose the log verbosity via the -v or --verbose flag
2. Append it to the rusty-battery command
3. Redirect output via >> /path/to/log/file 2>&1
4. Check all logs via

sh more /path/to/log/file

• Check live logs:

sh tail -f /path/to/log/file

• 2>&1 explanation

Debugging

• Here is a useful thread for crontab debugging
• To check that rusty-battery is running you can use

sh ps aux | grep -e rusty-battery

• To kill the job you can use ($PID can be found via the previous command):

sh kill $PID

Device support

Tested on:

• OS: Fedora 34, 35, 36
• DE: Plasma