In the illustrated embodiment, there are three chargers and three battery cell packs on the top half, with three additional battery cell packs and three additional chargers on the bottom half. For the sake of simplicity, a detailed description of the active battery module contents will be provided for two cell packs rather than three. A first pair of cell packs 22d has an associated cell support system 24 comprising a first charger 24a and a first set of cell monitoring electronics 24c. A protective plate 22p protects cell fire and explosion from escaping out through the top of housing 14. A baffle 22f extends from the back (left) wall of the housing toward the first exterior wall 28, and terminates to provide a gap between the baffle and the first exterior wall 28. The baffle 22f protects cell fire and explosion from spreading through housing 14. A second pair of cell packs 22e has an associated cell support system 24 comprising a second charger 24b and a second set of cell monitoring electronics 24d. Additional protect plates may be positioned around components within the active battery module. The battery cells are arranged within cell crates 22k, for example, one set of cells within one crate to form one cell pack. The cell crate provides additional containment of cell fire and explosion, and further protects from the enclosed cells from other cell fire and explosion. One cooling fan 60, for example, an inflow cooling fan is oriented to direct cooling air in between two cell packs. Another cooling fan, for example, an outflow cooling fan is oriented to draw cooling air from between the other two cell packs.