According to the different electrolyte materials used in customized lithium batteries, they are mainly divided into liquid lithium ion batteries and polymer lithium ion batteries.

Rechargeable lithium batteries are currently widely used in modern digital products such as mobile phones and notebook computers. Whether it is an 18650 lithium battery or an iron-lithium battery, it should not be overcharged during use, otherwise the battery will be damaged or scrapped. There is a protection circuit on the battery to prevent expensive battery damage. Lithium-ion battery charging requirements are very high. To ensure that the termination voltage is within plus or minus one percent, major semiconductor device manufacturers have developed a variety of lithium-ion charging ICs to ensure stable, reliable, and fast charging.

Mobile phones basically use customized lithium batteries. The correct use of lithium batteries is very important to extend battery life. It can be made into different shapes according to the requirements of different ideas and products, and it is a battery composed of several batteries in series and parallel. Group. The rated voltage of a lithium battery is generally 3.7V due to changes in materials, and the positive electrode of a lithium iron phosphate battery is 3.2V. The final charging voltage when fully charged is generally 4.2V. The final discharge voltage of the lithium battery is 2.75V-3.0V. If it continues to discharge below 2.5V, it will become overdischarge, and overdischarge will damage the battery.