Fuel cells combine hydrogen and oxygen from the air to produce water, and in the process releasing electricity on demand.
Hydrogen fuel pellets that are cheaper and weigh less than half what batteries weigh could soon be replacing them thanks in part to a new recharging technology. Using a Purdue University innovation, General Atomics (San Diego) claims its hydrogen fuel pellets will save the Army $27 million a year and cut a solder's backpack by 10 pounds. In addition, General Atomics' hydrogen fuel pellets could someday be replenished after use by virtue of technology from the guys who invented the atomic bomb—Los Alamos National Laboratory (LANL).
Further Reading: http://bit.ly/NextGenLog-eqK4
