Provided are current carriers for vehicle energy-storage systems comprising: a positive power plane; a negative power plane; a dielectric isolation layer disposed between the positive power plane and the negative power plane; a plurality of positive contacts formed in the positive power plane, the positive contacts being for electrical coupling to a respective cathode terminal of each battery cell of a plurality of battery cells; and a plurality of negative contacts formed in the negative power plane, the negative contacts being for electrical coupling to a respective anode terminal of each battery cell of the plurality of battery cells.