The difference between 18650 lithium battery and polymer lithium battery

The difference between 18650 lithium battery and polymer lithium battery is the same capacity which is more durable? The shape of the first 18650 cell is cylindrical, with liquid inside. Because of the characteristics of the battery design and raw materials, the power 18650 battery is suitable for high current discharge, so many high power There are nearly 18650 lithium batteries in the market, but ultra-thin laptops, tablets, etc., especially, because you want to look thin, do not use 18650 batteries, but use lithium polymer batteries, but high-power Digital cameras are all different. Because the flash has to charge and discharge high voltage and instantaneous high current, only 18650 power lithium batteries or other types of power lithium ion batteries can be used, but they are slightly smaller. For example, 18500 lithium batteries are digital camera products. The 18650 power lithium battery has the advantages of high energy density and large discharge current, so current electric vehicles are all lithium polymer batteries designed with 18650 power lithium batteries, which are small in size and large in capacity. The disadvantage is that life is short. In 18650, because of the use of different designs and materials, some internal liquids, some dry or colloidal, and higher current discharge performance than 18650 cylindrical batteries, the large-capacity electrical equipment I want is small in size, and lithium polymer batteries are often used. The most typical performance is mobile phones, tablets and other devices. 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: 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. 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: Three advantages of lithium battery electric vehicles