Abstract: This disclosure relates to a rechargeable battery cell containing an active metal, at least one positive electrode with a discharge element, at least one negative electrode with a discharge element, a housing, and an electrolyte, the discharge element of the positive electrode and the discharge element of the negative electrode being embodied independently of one another from a material selected from the group formed by aluminum and copper, and wherein the electrolyte is based on SO2 and contains at least one conductive salt which has the formula (I), wherein M is a metal selected from the group formed by alkali metals, alkaline earth metals, metals of group 12 of the periodic table of elements, and aluminum; x is an integer from 1 to 3; the substituents R1, R2, R3, and R4 are selected independently of one another from the group formed by C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 cycloalkyl, C6-C14 aryl, and C5-C14 heteroaryl; and wherein Z is aluminum or boron.