AEROSOL GENERATING DEVICE AND METHOD FOR PERFORMING AUTHENTICATION OF DETACHABLE BATTERY IN AEROSOL GENERATING DEVICE

In an aerosol-generating device and a method of authenticating a removable battery in the aerosol-generating device, a protection circuit module is accessed by electrically coupling with the protection circuit module provided in the removable battery when a removable battery is newly mounted on the aerosol-generating device, authentication information of the removable battery is obtained from the protection circuit module by accessing the protection circuit module through the battery connection unit, whether the removable battery is an authenticated battery or unauthenticated battery for the aerosol-generating device is determined based on the obtained authentication information, and the aerosol-generating device is controlled to operate in an authenticated mode in which all functions of the aerosol-generating device are activated by power supply from the removable battery, when the removable battery is determined as being an authenticated battery, or in an unauthenticated mode in which at least some functions of the aerosol-generating device are deactivated by power supply from the removable battery, when the removable battery determined as being an unauthenticated battery.