If We see of any where almost all electronics things having battery are need to be charge.

There are a lot of moment came in our life when we are away from power source and there are a lot of people who do not have electricity and solar is not available for 24 hour. At night also batteries required for charging during day time. But it is not on demand when you need at night. Many of our children can not get their education because they do not have light at night. I hope with this technology  they have big hope for education also they will take part in science and technology and make our feature more bright.