Power supply system for portable aerosol-generating device

An electrical system comprising a primary device and secondary device, the primary device comprising:

• a source of electrical power;
• a cavity configured to receive the secondary device;
• a plurality of electrical contacts within the cavity configured to contact corresponding contacts on the secondary device when the secondary device is in the cavity, the plurality of electrical contacts being electrically connected to the source of electrical power;
• and
• a lid moveable between a first position to retain the secondary device in contact with the at least one electrical contact, and a second position in which the secondary device is free to move out of contact with the at least one electrical contact.

An electrical system comprising a primary device and secondary device, the primary device comprising:

• a source of electrical power;
• a cavity configured to receive the secondary device;
• a plurality of electrical contacts within the cavity configured to contact corresponding contacts on the secondary device when the secondary device is in the cavity, the plurality of electrical contacts being electrically connected to the source of electrical power;
• and
• a lid moveable between a first position to retain the secondary device in the cavity and a second position in which the secondary device is free to move out of the cavity, wherein the lid comprises at least one aperture that allows material to escape from the cavity when the lid is in the first position.