The inverter lithium battery all-in-one machine is a device that integrates a lithium battery and a charger. It has the advantages of being lightweight, efficient, safe and reliable. Its working principle is based on the chemical reaction of lithium batteries, charging and discharging are achieved by connecting the positive and negative electrodes of the battery through electronic circuits. When charging, lithium ions move from the positive electrode to the negative electrode, generating current and storing energy; when discharging, lithium ions move from the negative electrode to the positive electrode, releasing the stored energy.?