Patent ID: 7207405

Claim:
A hybrid power supply apparatus interchangeable with a conventional battery removably positionable within a battery receptacle tray of an electric vehicle, the battery having a power output connectable to the drive system of the vehicle, said hybrid power apparatus comprising: (a) a fuel cell; (b) an energy storage device chargeable by said fuel cell; (c) a housing enclosing said fuel cell and said energy storage device, wherein said housing is sized to fit within said battery receptacle tray; (d) a power output electrically connectable to said storage device and extending externally of said housing for electrically coupling said apparatus to said drive system of said vehicle when said housing is positioned within said battery receptacle tray; (e) a first vibration dampener positioned within said housing for absorbing vibration when said vehicle is in operation; (f) a second vibration dampener which surrounds at least part of said housing when said housing is positioned within said battery receptacle tray; and (g) a compensator weight positioned within said housing for increasing the weight of said apparatus to a weight approximating the weight of said conventional battery.