Mobile POS machines are widely used in the market. General POS machines use button batteries as backup power. In order to prevent the POS machine from being invaded by external attacks, the coin cell button battery-LiMnO2 batteries can provide backup power for the device when the main power supply battery of the POS machine is exhausted to ensure the POS machine working in normal. Among the global POS terminal manufacturers, Power Glory has cooperation with the top five POS manufacturers in the world.