Here's the drill...greener than before says Imara

A Silicon Valley company claims a major breakthrough in the battery biz. And so much of our world is now battery driven. From electric drills, to starting vehicles to backing up power grid applications. Imara says they're now cleaner, more efficient, more dependable than the stuff you may using right now.

Imara makes Lithium-ion batteries for every application, tiny to electrical grid-sized. Imara says it sticks to strictest green standards and highest levels of air quality regulation. They won't explain in detail how their technology works. But here's their online explanation: "Our patented process creates a cathode with very low impedance, stable cycle life and high current carrying capacity. Our process is material agnostic; applicable to current and emerging li-ion compounds. As a result, Imara can produce high quality cathodes out of materials along the li-ion spectrum while taking advantage of new and improved chemistries."

They claim power tools run as well as they do on electricity from a cord, but cleaner. Already portable equipment gets longer battery life and quicker re-charging, says Imara. And they make this stuff right there in Menlo Park. In an American factory.