Analysis of the advantages of 18650 lithium battery and the principle of repair

What are the advantages of 18650 lithium battery? Obviously, the 18650 lithium battery has the characteristics of high energy density, large capacity, no memory effect, and long life. 1. Long life. The 18650 lithium battery has a long service life. The normal service life of 18650 lithium batteries can reach more than 500 cycles, which is more than twice that of ordinary batteries. Second, the internal resistance is small, and the irreversible capacity loss is small, which greatly reduces the power consumption of the battery itself and prolongs the standby time. 3. The 18650 lithium battery has a large capacity. There is no doubt that the capacity of a general 18650 lithium battery is between 1200mah and 3600mah, and the capacity can be greatly improved by connecting the battery in series and parallel to the battery pack. Fourth, 18650 battery has no memory effect, so do not discharge the remaining power before charging, which is more convenient to use. 5. High safety performance, 18650 lithium battery has high safety performance, does not explode or pollute the environment. After the data test statement: because the positive and negative electrodes of the 18650 lithium battery are separated, the possibility of short-circuit phenomenon has been reduced to the extreme in most cases. In addition, a protection board can be added to the 18650 lithium battery, which on the one hand prevents overcharge and overdischarge of the battery, and can also achieve the effect of extending the service life of the battery. 18650 lithium battery repair principle: repair principle 1. Long-term use of lithium battery metal surface will have a certain degree of oxidation, resulting in poor contact between mobile phone battery and mobile phone, lithium battery use time is short, and use rubber sassafras or other cleaning tools to clean the surface The rusty material keeps the battery in constant contact with the mobile phone. Act better. Repair principle 2. The deep discharge of the mobile phone is to achieve deeper recharging by depleting the internal electric energy, which requires some non-traditional methods. Find a way to connect the phone to a small 1.5 volt light bulb. The electricity inside the lithium battery will be transferred to the small bulb until all the lights are on. The mobile phone slowly drains its power through a lower voltage. Normally, if the connected voltage of the mobile phone is lower than 3.6 volts, the mobile phone will automatically shut down. Recharge, the battery can be used for a longer time. Repair principle 3. Low temperature can change the electrolyte of the lithium battery and promote the chemical reaction of the newly frozen battery. The use of lithium batteries is actually a charge and discharge process. During this period, the negative and positive charges in the battery collide with each other. The reason why batteries are becoming more and more impractical is that at normal room temperature, the internal energy of electrons is relatively large, so the battery is in an active state and leaks relatively frequently. When a lithium battery is placed in a low-temperature environment, the microstructure of the lithium film and electrolyte on the surface of the lithium battery and the interface between the lithium battery and the lithium battery change distinctly, making the battery inactive and reducing leakage current. So after charging, the standby time of the phone will increase. The cycle life of lithium batteries is about 600 times. If charged repeatedly, the thermal movement of the molecules will gradually destroy the internal arrangement and structure of the molecules, and the efficiency of storing charges will gradually decrease. The freezing process can easily damage the original internal structure of the battery, and the charging capacity may be improved in a short time, but long-term use may not be effective. Once the microstructure of the lithium battery is destroyed, it is impossible to fully recover. Long-term use of this method will accelerate the loss of mobile phone batteries. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: A simple analysis of the advantages and disadvantages of lithium batteries