Look at ZENN Motors Co. {ZNN.V Venture Exchange Toronto} stock is on the move. Looks Like the EESTOR capacitor is on it's way out into production on time this fall/09. Not a battery but a Capacitor. The amps equal the size of the cap (farads) times the change in volts divided by time it discharged.
i = c * Dv/Dt
Biggest invention of the 21st century will be ultracaps.