i3status.config

general {
        colors = true
        interval = 5
}

order += "ipv6"
order += "disk /"
order += "run_watch DHCP"
order += "run_watch VPN"
order += "wireless eth2"
order += "ethernet eth0"
order += "battery 1"
order += "load"
order += "time"

wireless eth2 {
        format_up = "W: (%quality at %essid) %ip"
        format_down = "W: down"
}

ethernet eth0 {
        # if you use %speed, i3status requires root privileges
        format_up = "E: %ip (%speed)"
        format_down = "E: down"
}

battery 1 {
        format = "%status %percentage %remaining"
}

run_watch DHCP {
        pidfile = "/var/run/dhclient*.pid"
}

run_watch VPN {
        pidfile = "/var/run/vpnc/pid"
}

time {
        format = "%Y-%m-%d %H:%M:%S"
}

load {
        format = "%1min"
}

disk "/" {
        format = "%free"
}

i3status.config

My i3status config for Acer Aspire 7560

purpose

• show wlan
• show battery

credits

http://tscho.de/2011/05/i3status-shows-no-battery/