NOVELTY - The storage (12) has an ultracapacitor (10) for operating at an ambient temperature up to about 90 degrees Celsius. A form factor e.g. cylindrical cell, makes economic use of space within a vehicle. The ultracapacitor comprises a carbonaceous material as an energy storage media. The carbonaceous material comprises vertically aligned carbon nanotubes. The ultracapacitor exhibits a capacitance decrease of less than about 50 percent over 2500 cycles while being operated at a maximum voltage. The form factor replaces insulation of the vehicle with the storage.    USE - High temperature propulsion RES for an energy power system (claimed) and for an automotive electrified drive train system, in a hybrid light, medium, heavy and industrial duty vehicle i.e. micro hybrid electric vehicles (uHEV), for providing power for moving the vehicle and/or driving components. Can also be used for a mild HEV (mHEV), a full HEV, plug-in HEV (PHEV) and range extended electric vehicles (REEV) or full electric vehicles (EV), or electrified vehicle.    ADVANTAGE - The storage provides designers, manufacturers and users of the hybrid vehicles with a stable power supply. The storage is not constrained by environmental considerations, and can be operated effectively in a high temperature environment. The storage reduces moisture content in the EDLC to less than 500 part per million (ppm) over weight and volume of an electrolyte, and the impurities to less than 1,000 ppm, so that the EDLC can be efficiently operated over a wide temperature range. The ultracapacitor reduces the complexity and cost of hybrid electric vehicles by providing higher power and energy density in a variety of environmental conditions such as in a high temperature and environment. The storage has improved performance characteristics and safe operating conditions even when the storage is placed outside a passenger cabin.    DETAILED DESCRIPTION - The ultracapacitor is an electric double-layer capacitor (EDLC). INDEPENDENT CLAIMS are also included for the following:    (1) a method for fabricating a rechargeable energy storage (RES) for a vehicle    (2) a method for providing power in a hybrid vehicle    (3) a method for equipping a hybrid vehicle with an energy power system.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a topology for managing load using a RES.    Ultracapacitor (10)    High temperature propulsion rechargeable energy storage (12)    Battery (28)    Electrical load (41)    Starter motor (42)    Controller (43)