A battery enclosure for a vehicle chassis having a base member with raised surface features on the upper surface outlining individual cells, each cell configured to receive at least one battery; a cover member having a plurality of depending surface features on the lower surface which are aligned with the surface features of the base member. The cover member includes a channel formed in the upper surface thereof, aligned with and extending along a length of the depending surface feature disposed on the bottom surface. A lattice support structure is also included which has a plurality of support members extending axially and transversely, wherein the lattice support structure is configured to be at least partially disposed within the channel of the cover member and mounted to the vehicle chassis. The lattice support member providing increased rigidity and a load distribution path for externally applied forces (e.g. crash events) to prevent or inhibit enclosure breakage or puncture.