A study by Standford has shown a great potential for this new lithium-ion batteries called silicon nanowires.  They use these wires to increase the battery life 10 times its current charge.  The nanowires work by getting saturated by lithium and are able to expand 4 times their size producing a great amount of charge in the same size.  Think about it this way, your phones talk time minutes could go from 4 hour battery life to as much as a 40 hour battery life.  Awesome Laptops which have a battery life of 4 hours could do the same…think about it