S-t-r-e-t-c-h

Springy, stretching battey wires 

I'm always interested in developments involving battery technology.  We've made huge advances in batteries in recent years but they are still the Achilles heel that limits portability and longevity of use.  Take a look at this article that discusses an innovation in flexible battery materials

http://www.bbc.co.uk/news/science-environment-21585817

Materials used for batteries are often very heavy and that limits their portability.  Look at the huge weight impediment for battery powered vehicles.  Not only are they massive, they have so much weight that a good degree of power is devoted to propelling this extra weight.

Battery weight in the future may not be such an issue if materials like Aerographite, developed at Kiel and Hamburg University of Technology move from the lab into full scale production.

Lighter than air space age material