Benwei talks about the ten advantages of 18650 lithium battery
18650 lithium battery, that is, the originator of 18650 lithium ion battery-a standard lithium ion battery model developed by Sony Corporation of Japan, where 18 represents a diameter of 18mm, 65 represents a length of 65mm, and 0 represents a cylindrical battery.
Because the 18650 lithium battery has the characteristics of light weight, large capacity, no memory effect, and very good stability, it is widely used in all aspects of life: electric vehicles, electric motorcycles, electric tricycles, electric bicycles, electric scooters, two-wheel electric balance Cars, glare flashlights, medical instruments, portable instruments, portable lighting equipment, industrial instruments, etc.
What are the specific advantages of 18650 lithium batteries?
1. High voltage
Due to the different material systems of 18650 lithium batteries, nominal voltages are generally 3.6V, 3.7V, 3.8V, and full-charge voltages are 4.2V and 4.35V, which are much higher than the 1.2V voltages of nickel-cadmium and nickel-hydrogen batteries.
2. Small internal resistance
18650 lithium batteries are more and more widely used, especially for the successful development of lithium power batteries for the electric vehicle market. The internal resistance of 18650 lithium batteries is getting smaller and smaller. Many of them are below 20mΩ, and some even reach below 10mΩ. It greatly reduces the heating and self-consumption of the battery, prolongs the use time, and can completely reach the level of international standards. Lithium batteries can basically replace nickel-metal hydride batteries in various fields.
Three, large capacity
After decades of development, the 18650 lithium battery has a capacity from 800mah to 3500mah in order to meet the needs of different products; while the nickel-hydrogen rechargeable battery has a capacity of only about 2000mah, and the voltage is only one-third of that of a lithium battery. If combined into a 18650 lithium battery pack, it can easily exceed 5000, 50000 or even 500000mah.
Fourth, long life
The theoretical cycle life of 18650 lithium battery is 500 times. With the development and application of new technologies and new materials, there are already high nickel lithium ion batteries with a theoretical cycle life of 2000 times. The service life is several times longer than that of ordinary rechargeable batteries.
Five, light weight
The energy density of 18650 lithium batteries is the highest among all batteries. The current energy density of lithium batteries is generally 200-260wh/g, and lead-acid is generally 50-70wh/g. Then the weight and energy density of lithium batteries is 3 to 5 times that of lead-acid batteries, which means that with the same capacity, the weight of lead-acid batteries is 3 to 5 times that of lithium batteries. In the light of energy storage devices, lithium batteries occupy the Absolute advantage.
Six, small size
The volumetric capacity density of lithium batteries is usually about 1.5 times that of lead-acid batteries, so under the same capacity, the volume of lithium batteries is about 30%-50% smaller than that of batteries.
7. No memory effect Ni-MH/Ni-Cd battery has serious memory effect, while lithium battery does not. It is not necessary to completely discharge and fully charge the battery during daily use, which is convenient to use.
8. It can be combined in series or parallel to form a 18650 lithium battery pack
Due to its standardization and ultra-high consistency, 18650 lithium batteries can be flexibly combined into 18650 lithium battery packs of various voltages, capacities, and sizes according to product needs to meet the special needs of various products, which infinitely expands 18650 lithium batteries. The scope of application of the battery.
Nine, high safety performance
18650 lithium battery has high safety performance. With the wide-ranging application of 18650 lithium battery, the process and technology are becoming more mature. 18650 lithium battery must undergo various rigorous tests such as short circuit, impact, puncture, and thermal shock before it goes on the market to improve its safety performance. At the same time, a lithium battery protection board is installed to protect the lithium battery from overcharge, over discharge, over current, short circuit and other aspects, which greatly improves safety.
10. Wide range of applications
18650 lithium batteries are widely used in all aspects of life, such as electric vehicles, electric motorcycles, electric tricycles, electric bicycles, electric scooters, two-wheel electric balance vehicles, glare flashlights, medical equipment, portable instruments, portable lighting equipment, Industrial equipment, lighting fixtures, communication equipment, instrumentation, audio equipment, etc.
The above is all about sharing the advantages of 18650 lithium battery.
