Emergency Lamp using White LED's - Equilent to fluorescent lamps, is this worth?

Power Failure is the major problem in rural areas

Battery failure is the major problem in emergency lamps[eg: SUNCA]

I would like to build a high power or long lasting emergency lamp.
Since we have verity of white LEDs are available also power saving is very high, i am going for it.

So, my idea is to keep assume 3 lamps(group of LEDS) in 3 different places, Also due to battery problem i am planning to buy TATA Green battery around 30Amp. Which will cost around 2k.

I know its a huge amount for simple LED. But Parallely i am planning for small 100w inverter using 4047 general purpose. So LED light will never go OFF for anytime bec of heavy battery.

How is this idea? And can you suggest me best battery for this purpose. I prefer TATA Green, How much the charging transformer require for this[Amps]? I guess its all cost around 3k.. Will this inverter/emergency setup be worth making finally??

As first - choose between "powerful" and "long lasting". Think this two things are not a friends.
Inverter. Why do you want to transform (e.g.) 12V to 120V (or 230V) and then back to 9V (12V) ?
Battery. If you'll use 12V 30Ah accu, for example nine LEDs each by 1W, that will be 3W in one "lamp". At 3-3,5V, 300mA, in serial connect, 3W of emitted light, 3 lamps... 900mA total, you can light up your house for 30-35 hours approximately

I am not trying 12v-230v-9/12v , For DC loads i am directly gonna use Batt. supply using regulators. I would like to convert 230v AC for general purpose AC loads within 100W range, So my project is similar to inverter but for lighting i am planning to use LEDs to save batt. power and increase lighting hours.

Now once again brought 6v SIGMA batt.
can someone tell me how to increase batt. life and maintaining max current for long days by proper charging and discharging?.. I am also planning to build a circuit for taking care of batt.

Now once again brought 6v SIGMA batt.
can someone tell me how to increase batt. life and maintaining max current for long days by proper charging and discharging?..

eetech

I would start by buying a 12volt battery rather than 6
What capacity is the battery you have ? (Amp/hours)
What model number is it ? the type makes a difference to the best way to charge.

Ya mine is ...

If you wish to have several LEDs on at the same time it may be possible to connect them in series. This prolongs battery life by lighting several LEDs with the same current as just one LED.

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home lighting enthusiast.

as jamaicabraden said.. adding to that you can have array of LED strips and switch the fast by turning on one strip at a time this will prevent powering on large number of LEDs at same time, instead only one strip is powered at a time.