Interview with Lonnie Johnson, one of America’s most prolific and successful inventors. NASA scientist, Super Soaker creator, green tech is now his thing

Lonnie Johnson's Super Soaker water gun, introduced in 1990, has racked up retail sales of more than $1 billion. Using the revenue from his past success, he's developing two devices he believes can revolutionize electrical power generation and storage.

Engineer Lonnie Johnson plans to bring his new battery to market in under a year if he can line up the right partners and funding.