Lithium power battery is the power source that provides power for tools. It mainly refers to the battery that provides power for electric cars, electric trains, electric bicycles and golf carts.

The accumulator is a kind of battery. Its function is to store the limited electric energy and use it in the right place. It works by converting chemical energy into electrical energy.

It USES lead plates filled with spongy lead as a negative electrode, lead plates filled with lead dioxide as a positive electrode, and 22 to 28 percent dilute sulfuric acid as an electrolyte. During charging, electrical energy is converted into chemical energy, which is then converted into electrical energy during discharge. When the battery is discharged, the metal lead is the negative electrode, which is oxidized to lead sulfate. Lead dioxide is a positive electrode, which is reduced to lead sulfate. When a battery is charged by direct current, lead and lead dioxide are produced at both poles. After removing the power supply, it reverts to its pre-discharge state and forms a chemical battery. Lead-acid batteries are batteries that can be recharged and discharged repeatedly, called secondary batteries. Its voltage is 2V, usually three lead batteries in series, the voltage is 6V. The car USES six lead batteries in a 12-v battery pack. Lead batteries need to be replenished with sulfuric acid after a period of use to keep the electrolyte containing 22-28% dilute sulfuric acid.