This kind of tech has been around for about a year... http://semiaccurate.com/2014/06/30/pretec-takes-step-flash-car-batteries/ http://semiaccurate.com/2014/06/

This kind of tech has been around for about a year... http://semiaccurate.com/2014/06/30/pretec-takes-step-flash-car-batteries/ http://semiaccurate.com/2014/06/30/pretec-takes-step-flash-c...