When Light Cuts suddenly, you need something Powerful yet handy which will Brighten your place at Cheapest possible cost !!!!

Step 1: Parts You Needed

1. 4V Lead-Acid Battery

2. 3W LED

3. slide switch

4. resistor 2.2R /1W

5. connector for charging (as per your choice)

Step 2: Circuit Diagram

Make connections as per the circuit diagram.

And you are done !

As i mensioned this small project will cost you just around 50/- indian rupees OR less than A dollar !

Charge it with 6V (500mA adapter max.) for 3-6 Hrs.