A battery system includes battery cells arranged and adhered to a carrier. One or more side walls are bonded with adhesive to the battery cells to provide support, and a current collector assembly is also adhered on one axial side of the battery cells. One or more dividers may be included to maintain electrically isolation between the parallel connected battery cell groups. The other axial side of the battery cells is adhered to a cooling plate. A similar structure is bonded with adhesive to the other side of the cooling plate to form a compact battery system. Shear walls, busbars, terminal busbars, and an isolation bracket with a mounted Electronic Control Unit are bonded with adhesive to the assembly to form the battery system. Each adhesive, or type of adhesive, may exhibit specified criteria and requirements such as strength, thermal conductivity, electronic conductivity, curing requirements, or a combination thereof.