Basic definition:

Electric energy can be derived from various forms of energy changes. The device that converts chemical energy into electrical energy is called a chemical battery. It is generally referred to simply as a battery. The battery has a primary battery and a secondary battery.

The original battery, which cannot be regenerated by internal charging after discharge, is also called a disposable battery.

After discharge, the internal active material can be regenerated by charging, and the electrical energy can be stored as chemical energy. When the battery needs to be discharged, the chemical energy can be converted into electrical energy again, which is called storage battery, also called secondary battery.

1. Definition
 A lead-acid battery is a type of battery. Its main feature is the use of dilute sulfuric acid as the electrolyte, and lead dioxide and fluff lead are used as an acidic battery for the positive and negative electrodes of the battery.
2, classification:
According to the battery plate structure classification: there is a form, paste and tube batteries.

According to the battery cover and structure classification: there are open type, exhaust type, anti-acid explosion-proof type and sealed valve-regulated battery.

According to the battery maintenance mode classification: There are ordinary type, less maintenance type, maintenance-free storage batteries.
 According to China's relevant standards, the main battery series are:
Starter battery (Q): Mainly used for starting and lighting of automobiles, tractors, diesel engines, etc.
 Fixed-type anti-acid battery (GF): It is mainly used for communication, power plants, and computer systems as backup power for protection and automatic control.
 Traction Battery (D): Mainly used for various battery vehicles, forklifts, forklifts and other power supplies.
 Railway passenger car batteries (T): Mainly used for railway passenger car lighting and on-board electrical equipment.
 Diesel locomotive battery (N): Mainly used for starting and lighting locomotives.
 Motorcycle Battery (M): Mainly used for various specifications of motorcycle starting and lighting.
 Aviation Battery (HK): Used for aircraft startup, lighting, and communications.
 Submarine Battery (JC): Power, lighting, and electrical equipment used for underwater navigation of submarines.
 Tank Battery (TK): Used for starting tanks, electrical equipment, and lighting.
 Miner's lamp battery (K): Miner's lamp lighting on the miner's helmet.
 Battery for beacons (B): Lighting of navigation channels at night.
 Batteries for other purposes: Different sizes and capacities, and various discharge rates, such as cameras, flashlights, emergency lights, and wind energy storage.