Sure:

bar {
    position top
    mode dock
    strip_workspace_numbers yes
    gaps 5
    status_edge_padding 0
    # When the status_command prints a new line to stdout, swaybar updates.
    status_command while printf \"%s :: %s" \"$(date +'%H:%M')\" \"$(cat /sys/class/power_supply/BAT0/capacity)%\"; do sleep 60; done 
    colors {
        statusline #f6f6f6
        background #272727
        inactive_workspace #272727 #272727 #f6f6f6
        focused_workspace  #f6f6f6 #f6f6f6 #272727
    }
}