Teach you what a lithium-ion battery was in 1865 in one minute!

To save costs, the Japanese company Sony has developed a standard lithium-ion battery model, in which 18 represents a diameter of 18 mm, 65 represents a length of 65 mm, and 0 represents a cylindrical cell. Battery recycling line This is 18650, the ancestor of the lithium-ion battery. The 18650 batteries we use are divided into lithium-ion battery and lithium iron phosphate battery. Lithium-ion battery nominal voltage 3.7 V, charging cut-off voltage 4.2 V, lithium iron phosphate battery nominal voltage 3.2 V, charging cut-off voltage 3.6 V, capacity is usually 1200 mah-3350 mah, general capacity is 2200 mah-2600 mah.

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Next, let's talk about the advantages and disadvantages of the 18650 lithium-ion battery

Advantages:

1, large capacity

The capacity of 18650 lithium battery is generally between 1200 mAh and 3600 mAh, lithium battery welding machine while the general battery capacity is only about 800mah. If you add the 18650 lithium battery pack, the 18650 lithium battery pack can easily exceed 5000mah.

2, long life

The 18650 lithium-ion battery has a long service life, mounting machine with a normal service life of more than 500 times, which is more than twice the life of ordinary lithium-ion battery.

3, high safety performance

18650 lithium battery has high safety performance, no explosion and no combustion; Non-toxic, pollution-free, RoHS trademark certification; Safety performance is completed at one time, and the number of cycles is more than 500 times; High temperature resistance, 65 degree discharge efficiency reaches 100%. In order to prevent short circuit, the anode and cathode of 18650 lithium battery are separated. So the possibility of short circuit has been reduced to the extreme. You can install a protective plate to avoid overcharge and overdischarge of the battery and extend the service life of the battery.

4, high voltage

The voltage of 18650 lithium batteries is generally 3.6V, 3.8V and 4.2V, which is much higher than the 1.2V voltage of nickel-cadmium and nickel-metal hydride power batteries.

5, no memory effect, easy to use

No memory effect, no need to empty the remaining battery before charging.

6, Small resistance:

The internal resistance of polymer battery is smaller than that of ordinary liquid battery. The internal resistance of domestic polymer battery can even be lower than 35mω, which greatly reduces the self-consumption of the battery and prolongs the standby time of the mobile phone, and can reach the international standard. Li-polymer, which supports large discharge current, is an ideal choice for remote control model and the most promising substitute for Ni-MH battery.

7, 18650 lithium battery pack can be connected in series or parallel.

8, wide range of use

It can be widely used in notebook computers, walkie-talkies, portable DVDs, instruments, audio system equipment, model planes, toys, video cameras, digital cameras and other electronic technology equipment.