ThinkPad Battery Status for Polybar

A Polybar module for monitoring ThinkPad batteries, dynamically handling multiple battery systems, displaying charge status, and providing a Rofi-based menu for detailed information.

Tested only on a ThinkPad T480.

UPDATE

Now updated with a battery alert script that sends a notification when one of the 2 battery is under 7%. Notification depends on notify-send.

Screenshots

• Battery at Full Capacity (White LED on port)

  

• Unplugged and Discharging (No LED on port)

  

• Charging (Red LED on port)

  

• Left Click Module Display

  

Features

• Calculates the weighted average of battery charge based on capacity (24Wh, or 72Wh)
• Displays charge status (charging, discharging, AC power) and current power consumption
• A single click opens a Rofi-based menu with detailed battery information
• Automatically detects and adjusts for battery swaps (e.g., switching between 24Wh and 72Wh)

Dependencies

• acpi (to check battery status)
• rofi (for the clickable menu)
• Nerd Fonts or Awesome Fonts (for icons)

Installation

1. Copy the scripts to an accessible location, e.g.:

mkdir -p ~/.config/polybar
cp bat-status-bar.sh bat-dropdown-rofi.sh ~/.config/polybar/

2. Add the following to your Polybar configuration (~/.config/polybar/config.ini):

[module/battery]
type = custom/script
exec = ~/.config/polybar/bat-status-bar.sh
click-left = ~/.config/polybar/bat-dropdown-rofi.sh
interval = 10

3. Update the Rofi theme in bat-dropdown-rofi.sh if necessary:

rofi -show run -theme ~/.config/polybar/batteries_rofi_style.rasi

If you prefer a custom theme, edit the corresponding .rasi file.

Rofi Theme

The Rofi theme is based on @adi1090x. If you prefer a custom theme, modify the batteries_rofi_style.rasi file!

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Note: I don’t own the Rofi style configuration; it’s credited to @adi1090x, and credentials are included in the file.