An eye-opening history of the technology that harnessed electricity and powered the greatest scientific and technological advances of our time. What begin as a long-running dispute in biology, involving a dead frog's twitching leg, a scalpel, and a metal plate, would become an invention that transformed the history of the world: the battery. Science journalist Henry Schlesinger traces the history of this essential power source and demonstrates its impact on our lives, from Alessandro Volta's first copper-and-zinc model in 1800 to twenty-first-century technological breakthroughs. Schlesinger introduces the charlatans and geniuses, the paupers and magnates, who were attracted to the power of the battery.