Aerosol-generating devices

An aerosol-generating device, comprising:

• a device housing defining a first receiving chamber, a second receiving chamber, and an internal space, the first receiving chamber being configured to receive and accommodate a first consumable, the second receiving chamber being configured to receive and accommodate a second consumable and a separate power source, the second receiving chamber and the first receiving chamber being in coaxial alignment;
• an internal power source within the internal space defined by the device housing, the internal power source being configured to provide power to the aerosol-generating device, the internal power source being between the first receiving chamber and the second receiving chamber, the internal power source being coaxially aligned with the first receiving chamber and the second receiving chamber;
• and
• a controller configured to control aerosolization of an aerosol-forming substrate of at least one consumable of the first consumable and the second consumable,
• wherein the separate power source is independent of the internal power source, and the second receiving chamber is configured to receive one of the second consumable or the separate power source at a time, such that the second consumable and the separate power source are exchangeable within the second receiving chamber,
• wherein the first consumable is housed in the first receiving chamber and the second consumable is housed in the second receiving chamber,
• wherein the second receiving chamber includes electrical contacts configured to be detachably connected to the separate power source based on the separate power source being in the second receiving chamber such that when the separate power source is received within the second receiving chamber, the electrical contacts provide additional power from the separate power source to the aerosol-generating device, and
• wherein the internal power source is connected to power both the first consumable and the second consumable when the first consumable is housed in the first receiving chamber concurrently with the second consumable being housed in the second receiving chamber.