Which types of cylindrical lithium batteries are classified

Type Classification of Cylindrical Lithium Battery Cylindrical primary batteries, mainly No. 5 and No. 7 batteries, other models are not resolved one by one, you can consult the manufacturer for details; the general size of No. 5 battery is: diameter 14mm, height 49mm; No. 7 battery, The general size is 11mm in diameter and 44mm in height. Cylindrical lithium batteries, the main models are 18650, 16650, 14500, etc. 18650 means that they have a diameter of 18 mm and a length of 65 mm. The AA battery model is 14500, 14 mm in diameter and 50 mm in length. Generally, 18650 batteries are used more in industry and few in civilian use. The common ones are also used in notebook batteries and high-end flashlights. 18650 is only the size of the battery. According to the type of battery, it can be divided into 18650 for lithium ion, 18650 for lithium iron phosphate, 18650 for nickel metal hydride (rarely), and the common 18650 is for lithium ion. 1. The capacity of a large-capacity 18650 lithium battery is generally between 1200mah and 3400mah. 2. Long life The 18650 lithium battery has a long life, and the cycle life can reach more than 500 times in normal use, which is more than twice that of ordinary batteries. 3. High safety performance The 18650 lithium battery has high safety performance. The 18650 was born in 1996. After decades of development, the 18650 lithium battery has been fully automated. The battery voltage, internal resistance, capacity, and self-discharge are very consistent. Well, it is currently the preferred model in various industries; it has good high temperature resistance, and the discharge efficiency is 100% at 65 degrees. In order to guard against the battery short-circuit phenomenon, the positive and negative electrodes of the 18650 lithium battery are separated. Therefore, the short-circuit phenomenon may have been reduced to the extreme. A protection board can be installed to guard against overcharge and overdischarge of the battery, which can also extend the battery life. 4. High voltage 18650 lithium battery voltage is generally 3.6V, 3.8V and 4.2V, much higher than the 1.2V voltage of nickel-cadmium and nickel-hydrogen batteries. 5. There is no memory effect. It is not necessary to empty the remaining power before charging, which is convenient to use. 6. Can be combined in series or parallel to form 18650 lithium battery packs. 7. Wide range of use: notebook computers, walkie-talkies, portable DVDs, instrumentation, audio equipment, model airplanes, toys, video cameras, digital cameras, new energy vehicles, medical industry and other electronic equipment. 8. In the case of the same brand, the price of the battery is more advantageous. The various parts of the battery have been manufactured in mature and large quantities. The processing cost is greatly reduced in the processing cost, so the cost performance is the best choice. 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 post: Which industry standards and regulations are used in the processing and production of lithium batteries?