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The advantages and disadvantages of 18650 lithium-ion battery and its use

The advantages of 18650 lithium-ion batteries

1. large capacity: the capacity of 18650 lithium-ion battery is generally between 1200mah~3600mah, and the general battery capacity is only about 800mah, if combined into 18650 lithium battery pack, the 18650 lithium battery pack can easily break through 5000mah.

2. long life: the service life of 18650 lithium-ion battery is very long, 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-ion battery safety performance is high, in order to prevent battery short circuit phenomenon, 18650 lithium battery anode and cathode are separated. So the possibility of a short circuit has been reduced to the extreme. You can install a protection plate to avoid overcharging and overdischarging the battery, which can also extend the service life of the battery.

4. high voltage: the voltage of 18650 lithium-ion batteries is generally 3.6V, 3.8V and 4.2V, much higher than the 1.2V voltage of nickel-cadmium and nickel-metal hydride batteries.

5. no memory effect does not have to empty the remaining power before charging, easy to use.

6. Small internal resistance: the internal resistance of the polymer cell is smaller than that of the general liquid cell, and the internal resistance of the domestic polymer cell can even be below 35mΩ, which greatly reduces the power consumption of the battery, extends the standby time of the mobile phone, and can fully reach the level of international standards. This polymer lithium battery, which supports large discharge currents, is an ideal choice for remote control models and has become the most promising alternative to Ni-MH batteries.

7. 18650 lithium battery pack can be synthesized in series or combined.

8.  use a wide range of laptop computers, walkie-talkies, portable DVDS, instruments, audio equipment, model aircraft, toys, cameras, digital cameras and other electronic equipment.

Disadvantages of 18650 lithium-ion battery

The biggest disadvantage of the 18650 lithium-ion battery is that its volume has been fixed, and it is not very well positioned when it is installed in some notebooks or some products, of course, this shortcoming can also be said to be an advantage, which is a disadvantage compared to the customizable and scalable size of lithium batteries such as other polymer lithium batteries. And relative to some specified battery specifications of the product has become an advantage.
The production of 18650 lithium batteries requires a protection line to prevent the battery from being overcharged and resulting in discharge. Of course, this is necessary for lithium batteries, which is also a disadvantage of lithium batteries, because the materials used in lithium batteries are basically lithium cobalt acid materials, and lithium cobalt acid lithium batteries can not be large current discharge, and the safety is poor.

18650 lithium-ion battery production conditions are high, relative to the general battery production, 18650 lithium battery production conditions are very high, which undoubtedly increases the cost of production.

The use of 18650 lithium-ion batteries

18650 Battery life theory for 1000 cycles of charge. Due to the large capacity of the unit density, most of them are used in laptop batteries, in addition, because of the stable performance of 18650 in the work is very good, widely used in major electronic fields: often used in high-grade strong light flashlight, portable power supply, wireless data transmission, electric heating clothes, shoes, portable instruments, portable lighting equipment, portable printers, portable devices, etc. Industrial instruments, medical instruments, etc.

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