A fuel cell arrangement consisting of several fuel cells, arranged at least essentially in parallel, with cooling gaps formed between neighboring cells extending between an inlet and an outlet and through which a coolant flows, characterized by the fact that the specific surface, i. A thermocouple or other temperature sensor is located at the bare tip of the cannula, and a wire for the temperature sensor extends along the length of the cannula, preferably in a groove formed in the tube, or through a passageway formed in the tube. The laser includes a gain section having an optical path length substantially shorter than the total optical path length of the laser. The power consumption mode of at least one storage unit not designated as active is altered to the specified power consumption mode indicated in the accessed profile, wherein the specified power consumption mode consumes less power than the active power consumption mode. The self adjusting mechanism is positioned about the pivot.