"Ultracapacitors are lighter and more powerful than batteries, 10 times more powerful by size as well as 10 times lighter," notes Brendan Coffey.

The editor of Cabot Green Investor explains, "Within this market, Maxwell Technologies (MXWL) is a San Diego-based company whose patent-protected ultracapacitors are denser -- and therefore able to hold more energy -- than those of its competitors.

"In a simplified comparison of how powerful and quick Maxwell's ultracaps are, a lead acid battery takes 10 hours to fully charge. A lithium ion battery will charge in about an hour.

"Maxwell Technologies (NASDAQ: MXWL) provides R&D services to the U.S. military and other government agencies; it's become the world's leading authority on ultracapacitors," says Timothy Lutts.

In The Cabot Stock of the Month report, he explains, "Ultracapacitors are handy little electronic devices that store and release electric energy more efficiently than batteries; they can be 10 times lighter than batteries and store and distribute energy 10 times more effciently than batteries."

"So what are ultracapacitors good for? Today, Maxwell-the primary American ultracapacitor manufacturer-is focusing its efforts on two fast-growing young industries: wind turbines and hybrid/electric vehicles.