At present, generally speaking, there are two kinds of batteries in the mobile power market, one is 18650 batteries and the other is polymer batteries. These two batteries dominate the market with a large share of the lithium battery industry.

    18650 is generally packaged in a steel shell, that is, the lithium ion of the 18650 is liquid, like a cup filled with water, similar to this understanding. Therefore, the 18650 can only be cylindrical. If everyone is buying a power bank and see a thick and large power bank, they are basically 18650 batteries.

    Due to the special nature of the 18650 packaging, if the quality of the products produced is not good enough, the biggest danger is the explosion. The explosions in the notebooks in the past few years were caused by problems with the quality control of Sony’s notebook batteries.

    Lithium polymer batteries are generally made from a mixture of lithium cobalt oxide, lithium manganate, and ternary lithium. Through a certain proportion of the mixture of the three, it is produced by a certain process. The outer packaging is mainly made of aluminum-plastic film, and the lithium substance in the middle is paste-like. So the shape can be customized arbitrarily.

    The polymer battery uses a layer of aluminum-plastic film and a layer of high-temperature tape. The greatest safety of the polymer is found to be leakage, short circuit, and expansion. The worst case is burning and flames. Therefore, compared with 18650, polymer batteries are better in terms of safety. But burning can also bring safety hazards, so it is recommended that users who use mobile power sources, try not to place mobile power sources on pillows, beds, etc.

    In the current high-end mobile power market, most of them use polymer batteries to make mobile power. To a certain extent, it is better for users to buy mobile power with polyhewu batteries, especially those with large capacity. mobile power.