Aerosol generating device, control unit for aerosol generating device, method, and program

A control unit for an aerosol generating device, comprising:

• a sensor that outputs a value related to a temperature of a lithium-ion secondary battery that is a power source capable of being charged and discharged to a load for atomizing an aerosol source;
• and
• a controller configured to execute one or more functions of operating the power source when an output value of the sensor is within a first range having a first upper limit and a first lower limit, wherein
• the first upper limit is smaller than a second upper limit of a second range having the second upper limit and a second lower limit, and the first lower limit is equal to or larger than the second lower limit, wherein the second range is a range of a value related to a temperature at which the one or more functions can be executed, a range of a value related to a temperature at which deterioration of the power source is suppressed, a range of a value related to a temperature at which the power source deteriorates due only to a factor that is the same as normal temperature, or a range corresponding to an operating temperature of the power source.