Like all capacitors, ultracapacitors have a high power density. Yet unlike their traditional counterparts, electrolytic capacitors, ultracapacitors offer high energy density, allowing them to store a ...

Maxwell Technologies designed its 12-volt ultracapacitor module as original equipment or as a retrofit solution to avoid commercial vehicle starting problems in cold weather or when batteries are ...

Maxwell Technologies Inc., taking its first steps in the growing market for hybrid electric vehicles, has agreed to supply ultracapacitors to General Motors Corp. and its Allison Transmission division ...