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# Battery
Library and CLI tool for monitoring [upowerd](https://upower.freedesktop.org/) devices.
## Usage
You can browse the [Battery reference](https://aylur.github.io/libastal/battery).
### CLI
```sh
astal-battery --help
```
### Library
:::code-group
```js [<i class="devicon-javascript-plain"></i> JavaScript]
import Battery from "gi://AstalBattery"
const battery = Battery.get_default()
print(battery.percentage)
```
```py [<i class="devicon-python-plain"></i> Python]
from gi.repository import AstalBattery as Battery
battery = Battery.get_default()
print(battery.get_percentage())
```
```lua [<i class="devicon-lua-plain"></i> Lua]
local Battery = require("lgi").require("AstalBattery")
local battery = Battery.get_default()
print(battery.percentage)
```
```vala [<i class="devicon-vala-plain"></i> Vala]
// Not yet documented
```
:::
## Installation
1. install dependencies
:::code-group
```sh [<i class="devicon-archlinux-plain"></i> Arch]
sudo pacman -Syu meson vala valadoc json-glib gobject-introspection
```
```sh [<i class="devicon-fedora-plain"></i> Fedora]
sudo dnf install meson vala valadoc json-glib-devel gobject-introspection-devel
```
```sh [<i class="devicon-ubuntu-plain"></i> Ubuntu]
sudo apt install meson valac valadoc libjson-glib-dev gobject-introspection
```
:::
::: info
Although UPower is not a direct build dependency,
it should be self-explanatory that the daemon is required to be available at runtime.
:::
2. clone repo
```sh
git clone https://github.com/aylur/astal.git
cd astal/lib/battery
```
3. install
```sh
meson setup --prefix /usr build
meson install -C build
```
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