The way we are using batteries today, is not only time consuming, but costly as well. Nanotechnology is creating things that are smaller, stronger and more efficient. This definitely will apply to batteries.
At the age of 18, Eesha Khare won a $50,000 scholarship, when she created a Supercapacitor. This supercapacitor charges a phone battery in 20 seconds. StoreDot has one that will charge a phone in 30 secs. Here is a clip from Brian Golden Davis, a finalist in the $200,000 GE Focus Forward film maker competition. It explains what Graphene is and how the Supercapcitor might work.
The Super Supercapacitor | Brian Golden Davis from Focus Forward Films on Vimeo.