What are the advantages and disadvantages of 18650 batteries?

 


18650 battery is cylindrical, there is liquid inside, because of battery design and materials, 18650 is suitable for high current, so almost all notebooks, electric cars are designed with 18650 battery; only super notebook, because of energy saving, so can not be used 18650 battery and use a polymer lithium battery, especially tablet computer; digital camera because of the charge and discharge of the flash requires large voltage and instantaneous high current, so only 18650 similar battery, but the volume is slightly smaller.

 

The advantages of polymer lithium battery, small size, large capacity, the disadvantage are that the life is shorter than 18650, because of the use of different designs and materials, some have liquid inside, some are dry or colloidal, and high current discharge performance not as good as the 18650 cylindrical battery, so the need for large-capacity and small-volume electrical equipment, usually using polymer lithium batteries, the most typical performance is mobile phones, tablets, and other equipment.

Household devices and daily use appliances require batteries of different capacities and types. Double AA batteries power devices such as TV remote control, wireless keyboard, and mouse, LED flashlights, smoke detectors and toys et al. Batteries and Chargers boast a collection of the most reliable and trusted AA, 18650, C cell, and D cell batteries and chargers. Our wide range of batteries includes brands like Energizer, Imren, LG, Samsung, Lithicore, Rayovac, and Powerowl. Buy the complete system at special pricing with the Batteries and chargers special bundle offers. The bundle includes batteries, chargers, and even flashlights together at a discounted rate. Select from a wide range of chargers from brands like Blackcell, Efest, Avatar and Nitecore.

18650 capacity regular size:

Generally, there are 2200mAh, 2400mAh, 2600mAh, 2800mAh capacity standards. At present, the 18650 has achieved a maximum single-block capacity of 3400 mAh.

18650 packaging:

18650 is generally packaged in steel, that is, 18650 lithium ions are in a liquid state, just like a cup filled with water, similar to this understanding. Therefore, the 18650 can only be cylindrical. If you buy a mobile power supply and see a thick and large mobile power supply, it is basically 18650 batteries.

Due to the particularity of the 18650 package (with steel shell), if the quality of the products produced is not enough, the biggest danger is the explosion. The explosion caused by the notebook in previous years is because of Sony's laptop battery (usually using 18650). There is a problem with quality control.

The outer surface of the polymer battery is made of a layer of aluminum-plastic film, and a layer of high-temperature adhesive tape is applied outside. The maximum safety of the polymer is that it leaks, short circuits, and causes the package to rise. The worst case is the burning and the flame. Therefore, compared with the 18650, the polymer battery is safer. However, burning also poses a safety hazard, so users who use mobile power are advised not to put the mobile power on the pillows, these places on the bed.

In the case of cell quality assurance, the size of the 18650 will be larger than that of the polymer, so the polymer cell will be lighter in terms of portability.

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