nixos/home/desktop/waybar/modules/battery.compact.nix

{
  states = {
    warning = 30;
    critical = 15;
  };
  format = "{icon}";
  format-charging = "󰂄";
  format-plugged = "󰚥";
  tooltip-format = "{time} {capacity}%";
  format-icons = ["󱃍" "󰁺" "󰁻" "󰁼" "󰁽" "󰁾" "󰁿" "󰂀" "󰂁" "󰂂" "󰁹"];
}