A much-shrouded idea could give portable power a real charge, for a change -- and change, well, everything. Imagine the day when cellphones charge up in seconds, laptop batteries never degrade, and electric cars have the same power, driving range and purchase price as their gas-powered cousins. Such a battery -- a superbattery -- doesn't exist today, but a tiny company out of Austin, Texas, is getting remarkably close, and the possibilities have caught the attention of the U.S. army, the former vice-chairman of Dell Computer, and one of the most respected venture capital firms in North America. Among EEStor's claims is that its electrical energy storage unit" could pack nearly 10 times the energy punch of a lead-acid battery of similar weight and, under mass production, would cost half as much. It also says its technology more than doubles the energy density of lithium-ion batteries in most portable computer and mobile gadgets today, but could be produced at one-eighth the cost. The company...is weeks away from seeking independent verification of the product's performance. Adding more intrigue to the story is the fact that Colin Powell, the former U.S. secretary of state, joined Kleiner Perkins last summer as a strategic partner.

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