The Plenty 20: Plenty, October 2008

A123 Systems The dawn of the hybrid car—not to mention $4-per-gallon gasoline—shows the importance of fuel-saving batteries. At the head of the class is A123. This Watertown, Massachusetts, start-up has a $148 million venture capital war chest that fueled a nanotech breakthrough: a battery that charges faster, holds more power, and is safer than anything […]