Compared with 18650 battery, what are the characteristics of polymer battery

1. High energy density. The capacity of a general 18650 battery can reach about 2200mAh, so that the energy density is about 500Wh/L, while the energy density of polymer batteries is currently close to 600Wh/L. 2. Good safety. We know that under extreme conditions (such as overcharge, high temperature, etc.), lithium batteries will have violent chemical reactions inside, and a lot of gas will appear. The 18650 battery uses a metal shell, which has a certain strength. When the internal air pressure reaches a certain level, the steel shell will break and burst, causing a fearful safety accident. This is why the room where the 18650 battery is detected generally has to be maintained layer by layer, and no one can enter during the detection. Polymer batteries do not have this problem, even in extreme cases, because the packaging film has low strength, it will break as long as the air pressure is slightly higher, and there will be no blasting. The worst case is incineration. So in terms of safety, polymer batteries are better than 18650 batteries. 3. Able to plan according to customer needs. This has already been said above, so I won’t repeat it. 4. The price is relatively high. . . The international price of 18650 is about 1USD/pcs. If calculated according to 2Ah, it is about 3RMB/Ah. The price of polymer lithium battery is 4RMB/Ah for low-end copycat factories, 5~7RMB/Ah for mid-range, and 7RMB/Ah for mid-to-high end. Like ATL and Lishen, they can generally sell for around 10RMB/Ah, and you are not happy to accept them when your order is small. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Briefly describe the impact of over-discharge of lithium battery packs