BATTERY BLOCK AND BATTERY MODULE

A battery block includes a plurality of cylindrical batteries, a battery holder that accommodates the cylindrical batteries arranged in a staggered manner, a positive-electrode current collector plate that is electrically connected to a positive electrode terminal of each of the cylindrical batteries, and a negative-electrode current collector plate that is electrically connected to a negative electrode terminal of each of the cylindrical batteries. At least one of the positive-electrode current collector plate and the negative-electrode current collector plate includes a bus bar that extends in an axial direction of the cylindrical battery to be electrically connected to a current collector plate of another battery block. A recess that accommodates the bus bar is formed in a gap between two of the cylindrical batteries in an end portion of the battery holder.