Abstract: A device for recharging a battery is described, including a connector (60) provided with three electrical contacts arranged linearly and two jaws having at their ends a cylindrical surface intended to clip onto a battery/case. The connector includes three electrical contacts (61, 62, 63) arranged linearly with the middle contact located at an equal distance from the two jaws. The battery/case includes two left and right side faces each comprising a recess with a hooking profile (55, 56) configured by each corresponding jaw of said connector (60). The battery includes three electrode terminals arranged linearly and configured to allow an electrical connection with each of the three contacts (61, 62, 63) of said connector (60), in which the middle electrode (52) carries a voltage representative of the temperature of the battery.