A battery includes at least one row of energy storage cells. The row of energy storage cells has a longitudinal extension direction with an upper side and lateral sides being respectively defined by a series of upper and lateral faces of the energy storage cells and of spaces separating the energy storage cells in the longitudinal extension direction. The battery also includes a dielectric fluid circuit with one or more spray orifices. The spray orifices are flush with the upper side of the row of energy storage cells and are located facing a lateral side of the row such that the dielectric fluid circuit leaves the upper side of the row free.