At present, there are two important types of batteries on the market. One is lithium battery cells and the other is polymer batteries. Among them, lithium batteries individually refer to aluminum-shell batteries, the electrolyte is liquid, and the outer packaging material is aluminum shell or nickel-plated steel shell. Under the constant elimination of the market, 18650 has become a standard for lithium batteries that people are happy to use.
The so-called 18650 refers to a cylindrical battery with a diameter of 18mm and a length of 65mm. That 0 indicates that it is a cylinder, which looks a lot like a large AAA (No. 5) dry battery. Many people think that 18650 batteries are already on the verge of being eliminated. In fact, this is far from the case. At present, Panasonic, Samsung, and Sony all have this business, and there are also many domestic factories that are constantly manufacturing, because most electric vehicles use 18650 batteries. The famous one is Tesla, and the whole vehicle is 18650 batteries.Some products such as power banks do not use this kind of battery, but more out of cost and style considerations.
At present, 18650 power bank products are still used, either at the low end or, for example, known as the strongest mobile power supply-No. 10, polymer lithium batteries are not used. Therefore, 18650 is not a technique that has been eliminated, it's just going in a different direction.
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