What Is A Battery?
Battery is device for energy conversion and storage, which converts chemical or physical energy into electrical energy through reactions. According to the different energy conversion of battery, battery can be divided into a chemical battery and a physical battery.
A chemical battery or chemical power source is a device that converts chemical energy into electrical energy. It is composed of positive and negative electrodes respectively by two electrochemically active electrodes with different components. A chemical substance that can provide media conduction is used as an electrolyte. When connected to an external carrier, it provides electrical energy by converting its internal chemical energy.
A physical battery is a device that converts physical energy into electrical energy.