The use of 18650 lithium ion battery

18650 battery life theory is 1000 cycles of charging. Because of the large capacity of unit density, most of them are used in laptop batteries. In addition, because the 18650 has a very good stability at work, it is widely used in various electronic fields: often used in high-end strong light flashlights and portable Power supply, wireless data transmitter, electric heating warm clothes, shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.lithium battery how it works

advantage:

1. The capacity of 18650 lithium ion battery with large capacity is generally between 1200mah~3600mah, while the general battery capacity is only about 800mah. If combined into a 18650 lithium ion battery pack, the 18650 lithium ion battery pack can easily exceed 5000mah.

2. Long life The 18650 lithium ion battery has a long service life. 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 ion battery has high safety performance, no explosion, no burning; non-toxic, non-polluting, RoHS trademark certification; all kinds of safety performance in one go, the number of cycles is greater than 500 times; high temperature resistance performance, 65 degrees conditions The discharge efficiency reaches 100%. In order to prevent the battery from short-circuiting, the positive and negative electrodes of the 18650 lithium-ion battery are separated. Therefore, the short-circuit phenomenon may have been reduced to the extreme. A protective board can be installed to prevent overcharge and overdischarge of the battery, which can also extend the service life of the battery.

4. High voltage 18650 Li-ion 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.

lithium ion battery fix:

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 prolongs the standby time of the mobile phone. In time, it can fully meet the 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-ion battery pack

8. Wide range of use: notebook computers, walkie-talkies, portable DVDs, instrumentation, audio equipment, model airplanes, toys, camcorders, digital cameras and other electronic equipment.

shortcoming:

The biggest disadvantage of the 18650 lithium-ion battery is that its size has been fixed, and it is not well positioned when installed in some notebooks or some products. Of course, this disadvantage can also be said to be an advantage, which is compared with other polymer lithium-ion batteries, etc. This is a disadvantage in terms of the customizable and changeable size of lithium-ion batteries. And it has become an advantage for some products with specified battery specifications.

18650 lithium-ion batteries are prone to short-circuit or explosion, which is also related to polymer lithium-ion batteries. If relatively ordinary batteries, this shortcoming is not so obvious.

The production of 18650 lithium-ion batteries must have a protective circuit to prevent the battery from being overcharged and causing discharge. Of course, this is necessary for lithium-ion batteries. This is also a common drawback of lithium-ion batteries, because the materials used in lithium-ion batteries are basically lithium cobalt oxide materials, and lithium-ion batteries made of lithium cobalt oxide materials cannot have high currents. Discharge, the safety is poor.

The 18650 lithium-ion battery requires high production conditions. Relative to the general battery production, the 18650 lithium-ion battery requires high production conditions, which undoubtedly adds to the production cost.