12v 18650 battery pack

　　18650 batteries

　　This type of lithium battery core refers to a rechargeable battery with a diameter of 18mm and a total length of 65mm. 0 indicates a cylindrical rechargeable battery. The technology is relatively mature, the battery structure is stable, the specific capacity is high, and the overall performance is outstanding. At the same time, because of its small size, it can be used in multiple fields and has important practical significance. The disadvantage is that its safety factor is not as good as that of polymer lithium batteries, and the circulation frequency of lithium batteries is relatively low, only about 300 times.

　　18650 batteries are generally cylindrical, and are generally packaged in aluminum shells. The key point is that because the 18650 lithium-ion battery behaves as a liquid, it is like a water glass filled with water, so the 18650 can only be cylindrical.

　　However, the risk of 18650 is still very large, mainly because the packaging design of 18650 generally uses a steel cover. If the manufacturer encounters uncontrollable problems in the process and the product quality is not good enough, it is prone to explosion problems.

　　Polymer batteries

　　Unlike traditional lithium batteries, the production process of polymer batteries is different. Lithium batteries are formed by winding, and the volume is relatively soft. The polymer is a layered structure, and the volume is relatively hard. For polymer and lithium batteries with the same volume, the volume of polymer is very large, which can reach 30%. Good safety factor, low risk of explosion. Increase lifespan. The battery is charged and discharged more than 500 times. The disadvantage is that the cost increases, and the same volume polymer battery is at least 100% more expensive than the 18650 lithium-ion battery lithium battery. The biggest hidden danger of lithium-ion batteries is that liquid leakage and short-circuit faults may cause unpacking difficulties, and the most terrifying situation will result in ignition and a simmer.

　　Which is better, 18650 batteries or lithium polymer batteries?

　　At the beginning, the two materials of 18650 lithium batteries and lithium polymer batteries are different. The raw materials of 18650 lithium batteries include lithium iron phosphate batteries, lithium manganese oxide batteries and ternary lithium batteries, etc., while the materials of lithium polymer batteries The material is generally a mixture of various materials such as lithium cobalt oxide batteries, lithium manganese oxide batteries, and ternary lithium. The former raw material has a single purity and high purity, while the latter raw material has extremely high composition.

　　The safety factors of these two materials are very different. The main reason for the 18650 battery is the packaging design of the aluminum shell, which makes it prone to explosions when the quality of the produced products is not up to standard. However, people who are beginners in assembly may not be able to judge whether the 18650 lithium batteries they buy are of product quality. For beginners, 18650 lithium batteries are more difficult to get started. How do you recommend them? Generally speaking, for the assembly of lithium batteries, novices are interested in the assembly of lithium battery packs. The lithium batteries selected by novices are the best lithium polymer batteries. The key is its high efficiency and high safety factor. The most important thing is a high safety factor. In the final analysis, only by protecting your own personal safety can you do what you want to do.