Advantages:

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

2, long life 18650 lithium battery life is very long, normal use cycle life can reach more than 500 times, is more than twice the ordinary battery.

3, high safety performance 18650 lithium battery safety performance is high, in order to prevent battery short circuit phenomenon, 18650 lithium battery positive and negative poles are separated. So the chances of it short-circuiting are extremely low. Protective plate can be added to avoid overcharge and overdischarge of the battery, which can also prolong the service life of the battery.

The voltage of lithium batteries is generally 3.6V, 3.8V and 4.2V, which is far higher than the 1.2V voltage of nickel-cadmium and nickel-metal hydride batteries.

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

6, small internal resistance: polymer cell internal resistance is smaller than the general liquid cell, domestic polymer cell internal resistance can even do 35m ω below, greatly reduce the battery consumption, extend the standby time of the mobile phone, can fully reach the level of international standards. This kind of polymer lithium battery which supports large discharge current is the ideal choice for remote control model, becoming the most promising product to replace nickel-metal hydride battery.

7, can be in series or combined to synthesize 18650 lithium battery pack

8, the use of a wide range of notebook computers, walkie-talkie, portable DVD, instrumentation, audio equipment, model aircraft, toys, video cameras, digital cameras and other electronic equipment.

Disadvantages:

The biggest disadvantage of 18650 lithium battery is that its volume has been fixed, which is not very good positioning when installed in some notebooks or some products. Of course, this disadvantage can also be said to be an advantage, which is a disadvantage compared with other lithium polymer batteries and other lithium batteries that can be customized and scalable. And relative to some specified battery specifications of the product has become an advantage.

18650 lithium battery production needs to have 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 drawback of lithium batteries, because lithium batteries are basically made of lithium cobalt acid materials, and lithium cobalt acid batteries can not discharge large current, poor safety.

The production conditions of 18650 lithium battery are high. Compared with the general battery production, the production conditions of 18650 lithium battery are high, which undoubtedly increases the production cost.