The invention relates to a system in which bridges (16, 18) with flanges (17, 19) for intercell connectors (24), said bridges connecting positive lugs (12), on the one hand, and negative lugs (14), onthe other, are, in a casting station (270), cast onto the lugs (12, 14) of positive and negative battery plates, which are assembled to form packs (10), after subjecting the lugs (12, 14) to a pretreatment by brushing and with flux. The packs (10), which are comprised of battery plates and which are provided with bridges (16, 18) in the aforementioned manner, are placed inside compartments (22) for cells in battery cases (20) while being arranged in groups each consisting of three packs. Cassettes (30) are used for moving the packs (10) of battery plates, and the packs (10) are held in thesecassettes while being squeezed between fixed and moving partitions (305, 307). The packs (10) are placed inside these cassettes (30) in such a manner that solely lugs (12) of positive plates are placed on one longitudinal side, and solely lugs (14) of negative plates are placed on the other longitudinal side.