What are the differences between 18650 batteries and lithium batteries?

What are the differences between 18650 batteries and lithium batteries? Lithium batteries have the following advantages over ordinary batteries: 1. Large capacity: The capacity of 18650 lithium battery is generally between 1200mah~3600mah, and the general battery capacity is only about 800. If the 18650 lithium battery is combined with the 18650 lithium battery pack, the 18650 lithium battery pack can easily exceed 5000mah. 2. Long service life: The 18650 lithium battery has a long service life. Under normal use, the cycle life is more than 500 times that of ordinary batteries and more than twice that of ordinary batteries. 3. High safety performance: 18650 lithium battery has high safety performance, no explosion, no burning; non-toxic, non-polluting, RoHS trademark certification; various safety performance, more than 500 cycles; high temperature resistance, 65 degrees power efficiency up to 100% . In order to prevent short circuits, the positive and negative electrodes of the 18650 lithium battery are separated. Therefore, the possibility of its short circuit has been reduced to the limit. You can add a protective panel to prevent the battery from being overcharged, which can extend the life of the battery. 4. High voltage: The voltage of 18650 lithium battery is generally 3.6v, 3.8v, 4.2v, which is much higher than the 1.2v voltage of nickel-cadmium battery and nickel-hydrogen battery. 18650 is a standard lithium battery model, where 18 represents a diameter of 18mm, 65 represents a length of 65mm, and 0 represents a cylindrical battery. Ordinary 18650 batteries are divided into lithium batteries and lithium iron phosphate batteries. The voltage of the lithium battery is 3.6v and 4.2v, and the voltage of the lithium iron phosphate battery is 3.2v, and the usual capacity is 1200MAH-3000MAH and 2200mAh-3600mAh. At present, the 18650 lithium battery is mainly processed by Japan, South Korea and China: Panasonic, Sanyo and Sony (about 18 yuan); battery level 2: South Korea's LG, Samsung (about 13 yuan); three-level battery: Lishen, Bick, Ming Chuang, Eve, New Energy, Yangtze River, Zhuoneng, Penghui and other domestic high-quality batteries (6-9 yuan); domestic batteries are relatively poor (4-6 US dollars, not durable, usually less than 4 US dollars, many refurbished The battery used in the product), the battery capacity above can reach 2000mah. Basically, the 3300mah brand battery capacity is the actual capacity, not the long-lasting resistance. It is determined by the purpose of the battery. When using some other capacity to determine the length of the working time, the general battery life With 500 cycles and 1,000 cycles, the internal structure of the battery capacity is gradually damaged and shrunk. Generally, lithium batteries can be used as power lithium-ion batteries (such as power tools, electrical appliances, electric bicycles, toys, etc.). Energy storage batteries, such as solar street lights, require different battery performance specifications. 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: Selection basis for lithium battery detector