A battery support structure for a vehicle includes a plurality of side reinforcement members and front and rear reinforcement members. The plurality of side reinforcement members are configured to extend longitudinally relative to an associated vehicle frame, and the front and rear reinforcement members are configured to extend laterally relative to the associated vehicle frame. A plurality of module nodes are attached between adjacent ends of the side reinforcement members and the front and rear members to together form a containment wall that generally surrounds a battery containment area. The plurality of module nodes comprise corner sections of the containment wall, such that a length of the side reinforcement members or the front and rear reinforcement members is selected to provide a desired respective length or width of the battery containment area.