This cartridge is designed to connect up to 24 cylindrical cells to perform formation or test. The contacting system is composed of spring-loaded pins for current flow, voltage control and an additional pin that can optionally detects the temperature of the current collector. The operator manually loads the cells into the cartridge, then loads the cartridge into the formation chamber and starts the automatic cycle. The cartridge is equipped with side connectors to facilitate the connection to the formation unit.