judgecorp writes "Researcherse at Stanford University have invented a battery material that could allow batteries to go through 400,000 charging cycles instead of the 400 or so which today's Li-ion batteries can manage. Among the uses could be storing energy to even out the availability of renewable sources such as sun and wind." Link to Original Source
A method of solution is perfect if we can forsee from the start,
and even prove, that following that method we shall attain our aim.