Implementation method of device for simulating alkaline battery by lithium battery

According to the implementation method of the device for simulating the alkaline battery by the lithium battery, the output characteristics of the alkaline battery are simulated, so that the lithium battery can be used in equipment needing the alkaline battery. The device is composed of an ADC sampling unit, a step-down circuit, a variable LDO, a master control unit and a digital potentiometer. The lithium battery has the advantages that 1, the compatibility is improved: the lithium battery can be used in various devices which are originally designed to be used for alkaline batteries, the application range of the lithium battery is enlarged, and the compatibility of a power supply solution is improved; 2, accurate electric quantity simulation: by simulating a voltage change curve of the alkaline battery, the equipment can display more accurate electric quantity information; and 3, early warning in advance: the user can obtain early warning of low electric quantity, so that sudden power failure of the equipmen