Duracell Powermat is announcing a pair of new features to encourage sales of its wireless charging gear. The first is "Mesh Network," a set of controls that let multiple hotspots be centrally monitored -- so if you're stealing all the juice in the Wall St. Starbucks, central office can cut you off. On the upside, those same network features will enable you to find another charging hotspot on your smartphone, including Madison Square Garden and Jay-Z's 40/40 club. The second fe
