BATTERY PACK

A method of controlling a battery including a first control circuit and a plurality of modules arranged in series between first and second terminals, each module including electric cells and switches coupling the cells and a second switch control circuit, the battery further including at least one first data transmission bus coupling the first control circuit to each second control circuit. The first control circuit includes a memory having, for each electric cell, an identifier of the electric cells and a priority level for the connection of the electric cell among priority levels stored therein.