You can charge and discharge lithium-ion batteries 300-500 times. You should only discharge part of the lithium-ion battery, not all of it, and do not discharge it often. 18650 manufacture The clock starts to tick as soon as the battery goes offline. Whether you use it or not, lithium-ion batteries last only two to three years.
The average lifespan of a 18650 lithium battery ranges from 300 to 500 charge cycles. If we assume that the full discharge gives a power output of Q, without considering the decrease in power after each cycle, then the battery can provide or supplement 300Q-500Q of energy throughout its lifespan. Consequently, charging with 1 u002F2 each time would allow for 600-1000 charges, while using 1 u002F3 each time would increase this number to 900 ~1500 charges. However, if charging is done randomly, the exact number cannot be determined.
There is a Chinese statement that lithium batteries have a "500-time" life, however the "times" refer to the cycle life of lithium batteries, which means that such a company has a completely different charge and discharge cycle. According to industry test and analysis methods, discharge depth x number of charges = cycle economy life. For a discharge depth of 80%, there will be at least 625 times that the battery will be charged and discharged, which equals 500 times.
In short, no matter how it is charged, the total power supply into the 300Q ~ 500Q power supply is constant. The lithium-ion battery's life depends not on how often it is charged, but rather on how much it is charged. Deep charging and shallow charging have the same effect on lithium life.
Is there a way to double the life of an 18650 lithium battery?
It is impossible to use lithium-ion batteries in extreme conditions due to their fear of heat and cold
Many people prefer to leave their lithium-ion electric vehicles out in the sun in the summer, or park them in the yard or on the street in the winter, which is detrimental to their battery life, and lithium ions migrate through electrolytes and electrodes at a rate closely related to temperature. It is possible to use it normally at temperatures ranging from -20 to 55 degrees Celsius.
It is not harmful to lithium batteries to use ambient temperatures between 5°C and 35°C, and northerners can bring lithium batteries back inside as much as possible in winter, avoiding exposing them to the sun this summer.
Lithium batteries should not be charged and discharged frequently
There is a common belief that the electric car manual states lithium-ion batteries only need to be charged once, after being plugged in and then unplugged. However, this is a misconception. The manual actually refers to the number of times a battery must be fully charged. Unlike nickel-cadmium batteries, lithium-ion batteries do not experience memory effect and can be charged at any time or place without affecting their lifespan. In fact, charging when the battery still has remaining power not only preserves its longevity, but also extends its cycle life. Therefore, it is important to utilize slow charging methods for lithium-ion batteries rather than deep charging.
18650 lithium battery advantages and disadvantages
The advantages are:
1.18650 lithium batteries have a capacity between Mach 1200 and 3600, but the actual capacity of the battery is only about Mach 800, and 18650 lithium ion batteries can easily exceed Mach 5000.
Two, the 18650 lithium battery network life cycle is very long, with a normal cycle economy life reaching more than 500 times, which is twice as long as an ordinary car battery.
The 18650 lithium battery has excellent safety features - it is free from explosions and combustion, does not contain any harmful substances, and is certified by the RoHS trademark. It can last for over 500 cycles and has efficient power down performance even at high temperatures of up to 65 °C. We have also taken measures to prevent short circuits by separating the positive and negative electrodes. For additional protection, a protection plate can be installed to prolong battery life by preventing overcharging and overdischarging.
The voltage of 18650 lithium batteries is generally 3.6V, 3.8V, and 4.2V, which is much higher than the voltage of nickel-cadmium and nickel-metal hydride power batteries, which are generally 1.2V.
There is no memory effect, no need to empty the remaining power before charging, and it is easy to operate.
The internal resistance of a polymer battery is much lower than that of a traditional liquid battery. In fact, domestic polymer batteries can have an internal resistance as low as 35 mω. This significantly reduces the battery's self-consumption, prolongs standby time for mobile phones, and meets international standards. With the ability to support large discharge currents, this polymer lithium battery is perfect for remote control models and shows great potential as a replacement for Ni-MH batteries.
An 18650 lithium battery pack can be built from seven of these batteries in series or parallel.
Make use of laptop computers, walkie-talkies, portable DVD players, audio equipment, aircraft models, toys, video cameras, digital cameras, and other electronic devices.
The cons are:
There are some disadvantages to the 1.18650 lithium battery, namely that the volume has been fixed, and it is not well positioned on some notebooks or products. In contrast to other lithium polymer lithium batteries that can be customized and adjusted in size, this shortcoming can also be said to be an advantage. Moreover, it has also become an advantage over some products that have specific battery specifications.
Unlike polymer Li-ion batteries, which are less obvious, 18650 Li-ion batteries are prone to short circuits and explosions.
It is essential for 18650 lithium battery manufacturers to implement eco-friendly travel routes to avoid overcharging and subsequent discharge. These precautions are crucial for the general public's use of Chinese lithium batteries, but they also highlight a drawback of this type of battery. The limitation lies in the materials used, as most lithium batteries rely on lithium cobalt acid, which cannot handle high current discharge and may have safety concerns.
18650 lithium battery production and living conditions of the development of high requirements, relative to the general battery production, 18650 lithium battery production technical conditions are very strict, which in turn increases the cost of managing social production.
Use of 18650 lithium batteries
According to 18650 battery theory, a battery should last 1,000 charge cycles. Due to its large unit density capacity, most of it is used for notebook batteries, and because of its excellent stability, 18650 is widely used in all major electronic fields: high-end flashlights, portable power supplies, wireless data transmission, comfortable clothing, shoes, portable instruments, portable lighting equipment, portable printers, industrial equipment, medical equipment, etc.
.jpg?x-oss-process=image/resize,p_100/format,webp)
