Do you know the advantages and disadvantages of the 18650 lithium battery?

Advantages

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

2, long life: 18650 lithium batteries has a long service life, the normal life cycle can reach more than 500 times, more than twice the average battery.

3, high safety performance: 18650 lithium battery safety performance, no explosion, no burning; non-toxic, non-polluting, after ROHS trademark certification; all kinds of safety performance in one go, cycle times greater than 500 times; high temperature performance, 65 degree condition to devolve electricity efficiency up to 100%. In order to prevent battery short circuit, the positive and negative poles of the 18650 lithium battery are separated. So the possibility of its short circuit has been reduced to the extreme. A protective plate can be added to prevent the battery from overcharging and over-discharging, which also extends the battery life.

4, high voltage 18650 lithium battery voltage is generally in 3.6 V, 3.8 V and 4.2 V, far higher than that of nickel cadmium and nickel metal hydride battery voltage is 1.2 V.

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

6, the internal resistance is small: the internal resistance of the polymer battery is smaller than that of the general liquid battery. The internal resistance of the domestic polymer battery can even be less than 35mΩ, which greatly reduces the self-consumption of the battery and prolongs the standby of the mobile phone. Time can fully reach the level of international standards. This polymer lithium battery that supports large discharge currents is an ideal choice for remote control models and is the most promising alternative to nickel-metal hydride batteries.

7, can be combined in series or parallel to form a 18650 lithium battery pack

8, widely used laptops, walkie-talkie, portable DVD, instruments and meters, model aircraft, toys, audio equipment, video cameras, digital cameras and other electronic equipment

Disadvantages

The biggest disadvantage of the 18650 lithium battery is that his volume has been fixed. 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. This is a lithium battery equivalent to other polymer lithium batteries. This is a disadvantage in terms of customizable and transformable size. It is an advantage over some products with specified battery specifications.

The 18650 lithium battery is prone to short circuit or explosion, and it is also relative to the polymer lithium battery. If it is relatively normal, this disadvantage is not so obvious.

18650 lithium-ion battery production need a protection circuit, to prevent the battery discharge caused by excessive filling quantity., of course, this is a must for lithium battery, this also is the a general disadvantages of lithium battery, because the materials used are basic cobalt acid lithium batteries, lithium materials, and cobalt acid lithium materials of lithium battery can't large current discharge, poor security.

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

The page contains the contents of the machine translation.