Super Battery
Spencer Reiss at Wired - the M1 battery, from A123 Systems, will greatly increase the power and time between charges of portable electric tools. It will be good for automobiles, too. They're safer, more environmentally friendly, provide five times the peak power (more than a typical 110 volt electrical socket), and have over twice the power density of existing Lithium Ion batteries. And they recharge to 90% in five minutes. [wired]