Aerosol delivery system

A control unit of an aerosol delivery device, the aerosol delivery device comprising:

• a power supply;
• a vaporizer arranged to selectively received power from the power supply to generate an aerosol from an aerosol precursor material for user inhalation;
• and
• a first electrical interface arranged to provide an electrical connection between the aerosol delivery device and a second aerosol delivery device so as to at least one of:
• supply power to or receive power from the second aerosol delivery device, or
• supply control signals to or receive control signals from the second aerosol delivery device,
• wherein the aerosol delivery device comprises a cartomizer detachable from the control unit,
• wherein the cartomizer comprises the vaporizer, and
• wherein the control unit comprises the power supply.