cbatt - text printout for battery usage/time for text-based status bars;
useful for window managers like awesome, wmii, xmonad etc.

Example output:

$ ./cbatt.sh 
[+46%/01:05]

'+'	AC is connected
'46%'	Battery charge status
'01:05'	time till charged


$ ./cbatt.sh
[45%/02:13]

no '+'	AC not connected
'45%'	Battery charge status
'02:13'	time till uncharged


Call cbatt with the parameter "color" to get coloring for awesome.
Edit the color in cbatt.sh as needed (defaults to red).


#### Awesome configuration

-- battery monitoring
mybattmon = widget({ type = "textbox", name = "mybattmon", align = "right" })
function battery_status ()
        local fd=io.popen("/home/you/cbatt.sh", "r")
        local line=fd:read()
        return line
end

mybattmon.text = " " .. battery_status() .. " "
my_battmon_timer=timer({timeout=10})
my_battmon_timer:add_signal("timeout", function()
    mybattmon.text = " " .. battery_status() .. " "
end)
my_battmon_timer:start()

--

In mywibox[s].widgets = { ... }, add mybattmon.