flash unit on a lesh - hack II

Again a little upgrade - i need to see if my batteries are OK just by looking at flash unit, well this will be helpful - one SmdLed taked from a LCD backlight trash..
it takes almost nothing so it can be switched on always - and showing if batteries are fresh, or dead by lighitng more or less or almost none..

how to make it? i have some hard way ;/ but I did it well .. take a look :

 remmember about good isolation becouse near Flash can be found 350V or more

 place cables so screw will not destroy them etc..

 its looking preety nice ;)

its also lighting batteries ;p  (sorry for picture q but sometimes its RLLY hard to take pictures of products while still holding it by other hand.. yeeee