NOVELTY - The hydrogen generator comprises a housing (22) comprising a base connected to a lid (26), where the housing defines a chamber, a heater assembly that is disposed in the chamber and comprises a strip (56) and a first heater on a first side of the strip and a second heater provided on an opposite second side of the strip, and a first cartridge that is disposed on the first side of the strip and comprises a first fuel pellet in thermal communication with the first heater, where the first fuel pellet comprises a hydrogen-containing material that releases hydrogen gas when heated.    USE - The hydrogen generator is useful in a fuel cell system (claimed).    ADVANTAGE - The re usable hydrogen generator produced large volume of without producing an excessive internal pressure within the hydrogen generator, is able to operate at or below a desired maximum temperature, can be easily and economically manufactured with high durability and reliability.    DETAILED DESCRIPTION - The hydrogen generator comprises a housing (22) comprising a base connected to a lid (26), where the housing defines a chamber, a heater assembly that is disposed in the chamber and comprises a strip (56) and a first heater on a first side of the strip and a second heater provided on an opposite second side of the strip, a first cartridge that is disposed on the first side of the strip and comprises a first fuel pellet in thermal communication with the first heater, where the first fuel pellet comprises a hydrogen-containing material that releases hydrogen gas when heated, and a second cartridge that is disposed on the second side of the strip and comprises a second fuel pellet in thermal communication with the second heater. The second fuel pellet comprises a hydrogen-containing material that releases hydrogen gas when heated. The heater assembly comprises first heating elements provided on the first side of the strip and second heating elements provided on the second side of the strip. The first cartridge comprises first fuel pellets aligned in thermal communication with the first heating elements, and the second cartridge comprises second fuel pellets aligned in thermal communication with the second heating elements. Each of the first and second cartridges comprises a thermal insulating material coating the fuel pellets. The thermal insulation material of the first cartridge abuts the thermal insulation material of the second cartridge. The first cartridge is further disposed to interface with a bottom side of the strip, and the second cartridge is further disposed to interface with a top side of the strip. The strip is pivotally connected to the housing such that the strip pivots to allow access to the first cartridge. The lid is pivotally connected to the base, and pivots between open and closed positions. The lid and/or base comprises slots, and other of the lid and/or base comprises pins (40) such that the pins move along a surface of the slots as the lid moves between open and closed positions. The lid further moves axially away from the base. The hydrogen generator further comprises a seal disposed between the lid and the base, an interlock mechanism that locks the lid closed relative to the base when pressure in the housing exceeds a predetermined pressure, a hydrogen outlet coupled to the housing in fluid communication with each of the fuel pellets to provide a hydrogen outlet path, and a controller for controlling activation of each of the heating elements to selectively heat the fuel pellets at a time. The hydrogen generator is adapted to be coupled to a fuel cell to supply hydrogen to the fuel cell. The housing is removably connected to the fuel cell. The fuel cell is located within the housing. The strip comprises first electrical contacts disposed on a first side of the strip and second electrical contacts disposed on an opposite second side of the strip. The first heating element is arranged on or in the first fuel pellet, and is electrically coupled to the first electrical contacts. The first electrical contacts provide electrical energy to the first heating element. The second heating element is arranged on or in the second fuel pellet, and is electrically coupled to the second electrical contacts. The second electrical contacts provide electrical energy to the second heating element. INDEPENDENT CLAIMS are included for:    (1) a fuel pellet assembly for a hydrogen generator; and    (2) a fuel cell system.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic perspective view of a hydrogen generator.    Housing (22)    Lid (26)    Pins (40)    Strip (56)    Fuel pellets. (60)