The secret of the 18650 lithium battery you don't know -part 3

4, high voltage

The voltage of the 18650 lithium battery is generally 3.6V, 3.8V and 4.2V, which is much higher than the 1.2V voltage of NiCd and NiMH batteries.

5, no memory effect

It is not necessary to empty the remaining power before charging, which is convenient to use.

6, the internal resistance is small

The internal resistance of the polymer battery core is smaller than that of the general liquid battery. The internal resistance of the domestic polymer battery can even be less than 35m, which greatly reduces the self-consumption of the battery and prolongs the standby time of the mobile phone. The level of international integration. 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, a wide range of uses

Electronic devices such as laptops, walkie-talkies, portable DVDs, instrumentation, audio equipment, model airplanes, toys, video cameras, digital cameras, etc.

Disadvantages

The biggest disadvantage of the 18650 lithium battery is that the volume has been fixed. It is not well positioned when installed in some notebooks or some products. Of course, this shortcoming can also be said to be an advantage. This is a lithium battery compared 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 rechargeable battery production needs to have a protection circuit to prevent the battery from being overcharged and causing discharge. The production conditions of the 18650 lithium battery are high. Compared with the general battery production, the 18650 lithium battery requires high production conditions, which undoubtedly increases the production cost.