
If you read enough articles about electric or hybrid vehicles, sooner or later you see references to ultra capacitors. Ultra capacitors are currently widely used in many energy saving devices and have a bright future, including potentially replacing the standard battery. Maxwell Technologies (stock symbol: MXWL) is one of several companies at the forefront of ultra capacitor technology.
First, a brief explanation of what an ultra capacitor is. An ultra capacitor is simply a capacitor with significantly enhanced ability to collect and quickly, very quickly, discharge energy. The charge/discharge cycle for an ultra capacitor can take only seconds. Batteries, by comparison, have a low discharge rate of typically one to ten hours. The ultra capacitors’ quick discharge and charge rate is accomplished by a special carbon coating that is applied to the two electrodes in the capacitor and then immersing the electrodes in an electrolyte.
Maxwell Technologies, based in San Diego, California, is a leading manufacturer of ultra capacitors. Maxwell Technologies’ ultra capacitors are used in many green energy products such as providing burst power to control wind turbines, recapturing and storing recuperative breaking energy in hybrid drive vehicles and for quick acceleration. In addition, their ultra capacitors provide