What are the components of mobile phone lithium battery?

The composition of mobile phone lithium battery The mobile phone lithium battery is mainly composed of the upper and lower covers of the plastic shell, the lithium battery core, the protective circuit board (PCB) and the recoverable fuse (polyswitch). Some manufacturers are also equipped with components such as NTC, identification resistor, vibration motor or charging circuit. The functions of each part are as follows: (1) Lithium battery: supply rechargeable power supply. (2) Protect the circuit board (PCB): prevent the battery from being overcharged and short-circuited. (3) Recoverable fuse (PTC): The positive thermistor is used for high temperature protection and at the same time is a double protection to protect the circuit board after failure. (4) Recoverable fuse (NTC): a negative thermistor, which senses the internal temperature of the battery for low-temperature protection. (5) Recognition resistance: It is very important to identify the original battery and the non-original battery can not be used. Among them, the battery core is very important, and the movement also has several levels, including Class A and B. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to maintain lithium battery UPS?