Are there any differences between polymer lithium battery and 18650?

At present, there are two types of batteries that are critical in the market, one is a lithium battery battery, and the other is a polymer battery. The lithium battery generally refers to an aluminum shell battery, the electrolyte is liquid, and the outer packaging material is aluminum shell or plating. Nickel-steel shell, under the constant elimination of the market, 18650 has become the standard for a lithium battery that people are most willing to use. The so-called 18650 refers to a cylindrical battery with a diameter of 18mm and a length of 65mm. The 0 is declared as a cylinder, which looks like a large AAA (size 5) dry battery. Many people think that the 18650 battery is on the verge of being eliminated. In fact, it is far from the case. At present, Panasonic, Samsung, and Sony all have this business. There are also many domestic factories that are continuously manufacturing, because most electric vehicles use 18650. The most famous battery is Tesla, the whole car is 18650 battery. In fact, most of the power bank products do not use this kind of batteries, more because of cost and style considerations. At present, 18650 power bank products are still used, either low-end or high-end. For example, No. 10, which is known as the strongest mobile power on the surface, does not use polymer lithium batteries. Therefore, 18650 is not a technology that has been eliminated, but only two It's extreme. [What is polymer lithium battery] Since its birth, polymer lithium battery has many advantages such as ultra-small, ultra-thin, ultra-light, high plasticity and high safety. Based on these advantages, the polymer lithium-free battery meets people's pursuit of appearance. Using his power bank can achieve a thickness of less than 10mm, and can also be made into some special shapes. Compared with the fixed appearance of the 18650, it is easier to personalize. Moreover, the safety of polymer lithium-free batteries is very high. Even if there is a problem, most of them will not explode, but will only bulge. This is very attractive for manufacturers and consumers. In terms of advantages, the 18650 technology is more mature, and there are still many large factories still developing and processing. The safety is actually better than the non-explosive polymer lithium battery. Of course, you have to use the products of regular large factories. The disadvantages of the 18650 are also very clear, the appearance is easy to be restricted, and low-end products have potential safety hazards. Even if you don't use it, you can't guarantee that others won't use it. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What is the identification method for a good lithium iron phosphate battery?