As far as the batteries in the current mobile power market are concerned, the batteries used by mobile power manufacturers for mobile power are basically polymer batteries and 18650 batteries, which dominate the largest share of the lithium battery industry. Wopin mobile power manufacturers are here. An explanation will be given to the two common batteries of mobile power supplies.

　　The mobile power lithium polymer battery cell is made of a mixture of lithium cobaltate, lithium manganate, and ternary lithium. It generally uses soft aluminum-plastic composite packaging film. The inside is a semi-solid polymer. The performance discharge is stable, the efficiency is high, and the internal resistance is small. The safety performance is better, and there are over-current and over-voltage protection devices. The service life of the mobile power supply is about 500 charge and discharge cycles. The size of the polymer is determined by the size of the volume, and it is also related to the ratio of the lithium raw material used. However, the disadvantages of polymer batteries are that they are easily deformed and not resistant to impact, but the quality of the mobile power supply varies from manufacturer to manufacturer. Therefore, the quality of the mobile power supply made of polymer batteries is also different. Wopin polymer mobile power supply, big brand, quality guaranteed.

　　18650 is a statement in the mobile power industry, that is, it is a cylindrical battery with a diameter of 18mm and a length of 65mm. The 18650 is generally packaged in a steel shell, that is, the lithium ion of the 18650 is liquid, so the 18650 can only be cylindrical. When buying a mobile power supply, I saw the thick and large mobile power supply, which are basically 18650 batteries. The 18650 battery cell does not have a protective circuit, which is the biggest difference from the polymer battery cell. But just because the protection circuit is guaranteed by the design circuit in the mobile power supply case, it is also necessary to ensure that the power supply safety design of the power supply box must be in place.