Precious Light Source....

I used this many times to preserve precious light source...

Take a battery otherwise you can take a small battery source from a rc car .... we can also take a battery from other rc devices.

take a led panel or any other light source like a set of led or bulbs.

take insulated wires and alline them together .

Now complete the circuit and put it in a dark room . Then see the magic that the whole room will fill with light . This way helps us to conserve light energy.

you can also make it chargeable by adding transistors in it.