Application of Lithium 18650 Battery
It is commonly used in high-end glare flashlights, portable power supplies, wireless data transmitters, electric heating, warm clothing, shoes, portable instrumentation, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.
Due to the large capacity per unit density, most of it is used for laptop batteries. In addition, because the stability of 18650 at work is very good, it is widely used in major electronic fields.
Advantages of 18650 Lithium Battery
1. Large Capacity
The capacity of 18650 lithium batteries is generally between 1200mah and 3600mah, while the general battery capacity is only about 800mah. If combined into a 18650 lithium battery pack, the capacity of 18650 pack can easily break through 5000mah.
2. Long Life
The 18650 lithium battery has a long service life. And the cycle life can reach more than 500 times during normal use, which is more than twice that of ordinary batteries.
3. High Safety Performance
The 18650 lithium battery has high safety performance. For one hand, It do not explode and catch fire. On the other hand, it is non-toxic and non-polluting.
We can see its structure. There is a galvanized steel shell to endure inner pressure. Thus it will not explode.
Further more, 18650 lithium battery has passed RoHS( Restriction of Hazardous Substance) trademark certification.
As we mentioned above, the number of cycles is greater than 500 times. It has good high temperature resistance. Because and the power-up efficiency can reach 100% even under 65℃.
In order to prevent short-circuiting of the battery, the positive and negative electrodes of the 18650 lithium battery are separated. Therefore, the probability of it short-circuiting is extremely low.
In order to avoid overcharging and over-discharging the battery, a protective board is installed inside. This method also can 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 batteries.
5. No Memory Effect
The 18650 lithium battery does not have to empty the remaining power before charging, which is easy to use.
6. Small Internal Resistance
The internal resistance of polymer batteries is smaller than that of ordinary liquid batteries. The internal resistance of domestic polymer batteries can even be below 35mW, which greatly reduces the self-consumption of the battery and extends the standby time of the mobile phone.
This is completely in line with international standards. This kind of polymer lithium battery that supports large discharge currents is an ideal choice for remote control models and has become the most promising alternative to nickel-metal hydride batteries.
7. Wide Usage
18650 battery can be used for notebook computers, walkie-talkie, portable DVDs, instrumentation, audio equipment, model aircraft, toys, video cameras, digital cameras and other electronic equipment
8.Flexible Battery Pack Custom More details on customing 18650 lithium battery packs.
It can be combined in series or in parallel into a 18650 lithium battery pack.
Disadvantages of 26650 lithium battery
1. Because the 26650 lithium battery has a small range of use and its performance status has been replaced by the 18650 lithium battery, many manufacturers no longer produce this battery.
2. Both the 26650 lithium battery and the 18650 lithium battery belong to cylindrical lithium batteries. So, what is the difference between the 26650 lithium battery and the 18650 lithium battery? Let’s take a look at the difference between 26650 lithium batteries and 18650 lithium batteries.
18650 Lithium Ion NMC Cells Vs 32650 LiFePO4 Cells
These are two different types of batteries.
18650 is an MnNiCo ternary lithium battery with a diameter of 18mm and a height of 65mm. 0 represents the battery type: Round 32650 is a LiFePO4 lithium iron phosphate battery with a diameter of 32mm and a height of 65mm. 0 represents the battery type.：
Round batteries have different diameters and different capacities. It is generally believed that the battery capacity of 32650 is twice that of 18650.
Advantages and disadvantages: The 18650 capacity of the ternary lithium battery is too large, so for the same capacity requirements per unit volume, the number of batteries required is small.
However, the internal structure of the ternary lithium battery is unstable, it can easily explode at high temperatures (above 60C), and the risk factor is high. LiFePO4 battery has a stable internal structure. High/Low temperature resistance and high safety tolerance are its great advantages.
Related Post :Lithium battery：18650 VS 26650
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