Energizer's set to unleash a new battery -- dubbed the Zinc Air Prismatic -- at CES in January, which they say will offer three times the juice of similar alkaline and lithium-ion batteries. Promising more runtime for smaller devices, they'll also supposedly be the same size as current, comparable batteries. It's a little vague right now, and we don't have any specifics on life times for specific examples of devices, but it all sure sounds great. We take exciting claims of battery power with a grain of salt, especially from the companie