A battery pack, comprising: a battery pack housing defining an interior region, the battery pack housing further having an inlet aperture and an outlet aperture communicating with the interior region; a battery module being disposed in the interior region of the battery pack housing proximate to the inlet aperture, the battery module having a first battery cell (150, 154, 158, 162, 166, 170), a heat exchanger, and first and second end plates (230, 232); the first battery cell and the heat exchanger being disposed against one another, and being further disposed between the first and second end plates; the heat exchanger defining a first flow path portion therethrough; the first battery cell having a first end and a second end; the first end plate extending parallel to a longitudinal axis of the battery module, the first end plate having a first end portion and a second end portion, the first end portion of the first end plate extending longitudinally past the first end of the first battery cell toward the inlet aperture; the second end portion of the first end plate extending longitudinally past the second end of the first battery cell; the second end plate extending parallel to the longitudinal axis of the battery module, the second end plate having a first end portion and a second end portion, the first end portion of the second end plate extending longitudinally past the first end of the first battery cell toward the inlet aperture; the second end portion of the second end plate extending longitudinally past the second end of the first battery cell; a thermally conductive housing being disposed in the interior region of the battery pack housing between the battery module and the outlet aperture of the battery pack housing; the thermally conductive housing defining a second flow path portion between the thermally conductive housing and the battery pack housing, the second flow path portion communicating with the first flow path portion; and an electric fan disposed in the interior region of the battery pack housing; the electric fan adapted to urge air to flow through the inlet aperture and through the first and second flow path portions and further through a portion of the electric fan and through the outlet aperture of the battery pack housing, characterized in that the first flow path portion is parallel with the first end plate and the second end plate, and the heat exchanger comprises first and second thermally conductive plates (360, 362) being coupled together and defining the first flow path portion extending therethrough; the first flow path portion having at least first and second flow path subportions extending through the first and second thermally conductive plates (360, 362). a battery pack housing defining an interior region, the battery pack housing further having an inlet aperture and an outlet aperture communicating with the interior region; a battery module being disposed in the interior region of the battery pack housing proximate to the inlet aperture, the battery module having a first battery cell (150, 154, 158, 162, 166, 170), a heat exchanger, and first and second end plates (230, 232); the first battery cell and the heat exchanger being disposed against one another, and being further disposed between the first and second end plates; the heat exchanger defining a first flow path portion therethrough; the first battery cell having a first end and a second end; the first end plate extending parallel to a longitudinal axis of the battery module, the first end plate having a first end portion and a second end portion, the first end portion of the first end plate extending longitudinally past the first end of the first battery cell toward the inlet aperture; the second end portion of the first end plate extending longitudinally past the second end of the first battery cell; the second end plate extending parallel to the longitudinal axis of the battery module, the second end plate having a first end portion and a second end portion, the first end portion of the second end plate extending longitudinally past the first end of the first battery cell toward the inlet aperture; the second end portion of the second end plate extending longitudinally past the second end of the first battery cell; a thermally conductive housing being disposed in the interior region of the battery pack housing between the battery module and the outlet aperture of the battery pack housing; the thermally conductive housing defining a second flow path portion between the thermally conductive housing and the battery pack housing, the second flow path portion communicating with the first flow path portion; and an electric fan disposed in the interior region of the battery pack housing; the electric fan adapted to urge air to flow through the inlet aperture and through the first and second flow path portions and further through a portion of the electric fan and through the outlet aperture of the battery pack housing, characterized in that