Who is better with 18650 and polymer batteries?

18650 energy storage capacity type energy storage capacity batteries usually have a capacity between 1000mAh and 3500mAh. A single capacity is relatively large, but the discharge current is relatively small, so it is generally used in equipment that does not require high current, such as mobile power supplies, electric toys, etc. 2000mAh 18650 energy storage battery 18650 power rate type 2000mAh power rate type 18650 battery power rate type battery cell capacity is generally about 2000mAh to 2800mAh, large discharge current, suitable for use in equipment with high current consumption, such as power tools. The 18650 usually uses a steel shell packaging design, that is, the lithium ion of the 18650 is liquid, like a cup filled with water. Therefore, the 18650 can only be cylindrical, and the thick and large power bank uses 18650 batteries. Because of the magic of the 18650 packaging design (steel shell is used), if the quality of the processed product is unqualified, the biggest risk factor is the explosion, and the most explosive is the electric bicycle, because the electric bicycle is to reduce the weight of the body, the manufacturer will choose For 18650 battery packs, choosing inferior batteries will easily cause the battery to catch fire or explode. The raw materials of lithium polymer batteries are usually mixed with lithium cobalt oxide, lithium manganate, and ternary lithium. According to the three compounds in the corresponding proportions, they are manufactured by the corresponding process. The outer packaging design must use aluminum-plastic film, and the lithium substance in the middle is sticky. Therefore, the shape can be customized arbitrarily. At the same time, it can manufacture ultra-thin batteries, such as 0.33mm, 0.50mm ultra-thin batteries. A layer of aluminum-plastic film is used for the outer packaging of polymer batteries, and a layer of high-temperature tape is wrapped on the outside. The biggest safety problem of polymer batteries is leakage, which can cause internal short-circuit and bulge in the battery and cause spontaneous combustion. But compared with 18650 batteries, polymer batteries are better in terms of safety. However, incineration will also bring safety risks. Therefore, it is recommended that users who use mobile chargers should not put mobile chargers on pillows or places near the bed as much as possible. 18650 and polymer batteries are both lithium batteries. At present, 18650 is widely available in the market with lithium iron phosphate, lithium manganate and ternary. Let's talk about the ternary succinctly. The ternary material 18650 is moderately priced and generally 1800 mA The domestic market price is about 7 yuan at the time, the nominal voltage is 3.8V, the maximum voltage can reach 4.2V when used, and the low voltage can reach 2.5V, there is no memory effect, and the scope of use of D is relatively wide. The technical strength of domestic production is also capable, and it is suitable for domestic production. The polymer batteries I have seen are mainly soft packs. There are power and capacity types. The material is similar to 18650, except that the 18650 is a stainless steel shell, and the polymer is an aluminum-plastic film shell. It is suitable for industrial processing and transportation vehicles. Power supply. 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: About the dangers of lithium batteries during transportation