An aerosol-generating device comprises a device housing comprising a first receiving chamber configured to receive and accommodate a first consumable and a second receiving chamber configured to receive and accommodate a second consumable. The device further comprises a power source in an internal space defined by the device housing and a controller configured to control aerosolization of an aerosol-forming substrate in a consumable in one of the first receiving chamber and in the second receiving chamber. At least the second receiving chamber includes electrical contacts configured to be detachably connected to a battery based on the separate power source being in the second receiving chamber such that the electrical contacts provide additional power from the separate power source to the aerosol-generating device.