We use a lot of power and most of it mobile. New technologies have been developed repeatedly to make the battery smaller in size, lighter in weight and having the capacity to last longer while doing a number of activities. Unfortunately a smartphone is just as good as it’s battery life and carrying power banks along so that you don’t get stranded with a run down battery has become a way of life.

Charging the battery of the smartphone has been the single biggest challenge for the present generation of phone users. Now scientists are trying to power your smartphone with human activity. All kinds of innovations are being seen, like a finger battery charger which needs to be put on the finger and spun for 130 revolutions to charge the battery of your phone.

Another innovation involves a basic silicon wafer being juiced up in such a manner with layers of charged ions that it can store the energy of a human touch and convert it into power for the phone. Science projects these days are even working on fitting a power converted into the heel of your shoe so that it can generate energy each time you walk and use that juice to power up gadgets around you.