Systems and methods for a battery pack to power an electric vehicle are provided. The battery pack can include a plurality of battery modules having a plurality of battery blocks. The battery blocks can include a plurality of cylindrical battery cells. A first current collector can include a conductive layer to couple the first current collector with positive terminals of the plurality of cylindrical battery cells. A second current collector can include a conductive layer to couple the second current collector with negative terminals of the plurality of cylindrical battery cells. The first current collector, second current collector, and an isolation layer can include a plurality of apertures to expose the positive terminals of the plurality of cylindrical battery cells. The positive terminals can extend through the plurality of apertures to couple with the conductive layer of the first current collector.