Battery cell

A secondary battery cell comprising: a case; an electrode assembly located within the case and comprising first and second electrodes; a first terminal electrically connected with the first electrode; and a second terminal electrically connected with the second electrode; wherein the first and second terminals project through the case; and one of the first and second terminals comprises first and second connection formations; wherein the first and second connection formations have mutually different shapes and are located on respectively different aspects of the case.