What types of 18650 batteries are there? What are the advantages of 18650 lithium batteries?

What are the types of 18650 batteries? There are 18650 nickel-metal hydride batteries, 18650 lithium batteries, and 18650 lithium iron phosphate batteries. Due to the material characteristics of the 18650 Ni-MH battery, the energy density is not comparable to that of the Li-ion battery, that is, the capacity density of the Li-ion battery is larger than that of the Ni-MH battery under the same volume, which eventually leads to the elimination of the 18650 Ni-MH battery in the market. Therefore, the common 18650 batteries currently on the market are all lithium batteries. However, 18650 lithium batteries are also divided into lithium batteries and lithium iron phosphate batteries. The nominal voltage of the lithium battery is 3.7v, the charge cut-off voltage is 4.2v, the nominal voltage of the lithium iron phosphate battery is 3.2V, the discharge cut-off voltage is 3.6v, the capacity is usually 1200mAh-3350mAh, and the common capacity is 2200mAh-2600mAh. 1. Advantages of 18650 lithium battery (1) Large capacity The capacity of 18650 lithium battery is generally between 1200mah~3600mah, while the general battery capacity is only about 800mah. If combined into a 18650 lithium battery pack, the 18650 lithium battery pack is casual It can break through 5000mah. (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 18650 lithium battery has high safety performance, non-explosive, non-combustible; non-toxic, non-polluting, and has passed RoHS trademark certification; all kinds of safety performance are integrated in one go, and the number of cycles is greater than 500; high temperature resistance is good, 65 degrees Discharge efficiency reaches 100% under conditions. 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) The voltage of high voltage 18650 lithium battery is generally 3.6V, 3.8V and 4.2V, which is 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) Small internal resistance: The internal resistance of polymer batteries is smaller than that of ordinary liquid batteries. The internal resistance of domestic polymer batteries can even be less than 35m, which greatly reduces the self-consumption of the battery and extends the mobile phone. The standby time can reach the level of international standards. This kind of polymer lithium battery that supports large discharge current is an ideal choice for remote control models, and it has become the most promising product to replace nickel-hydrogen batteries. (7) It can be combined in series or parallel to form a 18650 lithium battery pack. (8) It has a wide range of use: notebook computers, walkie-talkies, portable DVDs, instrumentation, audio equipment, model airplanes, toys, camcorders, digital cameras and other electronic equipment. 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: Analysis on the advantages of lithium iron phosphate batteries