18650 lithium battery usage method and precautions

How to use 18650 lithium battery In the process of using 18650 lithium battery, don't know so much, just know how to charge the battery, how to discharge the battery, how to use the battery to the maximum and maintain good cycle performance. The following is how to use 18650 lithium battery: 18650 lithium battery 1. Regarding the issue of direct charging and seat charging, I think it is best to use seat charging when time permits. This will not only extend the life of the battery, but also add new ones. The capacity of a charge. Of course, some external devices can also be used in summer, such as mobile power supplies. 2. If the battery is not used for a long time, it is best to charge about 40%, the storage temperature is 10~30℃, and charge it every six months or so; 3. Only buy a new 18650 lithium battery. Some people say that the first three charges must be charged for more than ten hours. Activate the cells, I can't see this. Of course, the capacity of the new 18650 lithium battery before may be insufficient. After the battery is stored for a long time, the surface of the active material is passivated. I think the first few times the charging seat is a green light after one or two hours. Enough, of course, the charging time will change the charging current of your charger and the capacity of the battery. In short, the longer the charging time, the better. This will not only not activate the cells, but will affect your life. If it is serious (if you The charger voltage accuracy control is not enough) will also explode. 4.During 18650, there is usually a misunderstanding of long-term use of lithium batteries. I want to talk to people. We tend to think that the number of batteries is determined, such as 500 times, so it should be fully utilized every time, so every time The charge must be filled with effort. Each discharge will try to clean it. It seems that this is the most effective use. In fact, it is not the case. The service life of the battery has a certain relationship. If the cycle life of your battery is 500 times, if you use it A suitable one, then you can use 700~800 times, so the correct way to use it is not to charge it up, about 90% is enough, you can see that the battery is low, you can charge it immediately during use, and don't even wait until it automatically turns off After the automatic shutdown is not charging, we do a test in the laboratory: the life of 80% DOD is about 30% of the life of the battery than 100% DOD; 5. It is also very important, the 18650 lithium battery and charger are Very strict, the charging voltage limit is very strict, you must see that its requirements are 4.1V and 4.2V, because if the cathode is using graphite series, when the limit voltage is 4.2V, if the cathode uses Coca-Cola series, the limit voltage is 4.1V, the general description of the battery, the charger and the battery must match, you cannot use the 4.2V to 4.1V charger to charge the battery; 6. There is another point that must be emphasized: never use nickel-metal hydride batteries or nickel-chromium batteries to 18650 lithium batteries Recharge. This will not only damage the battery, but also cause an explosion. 7.18650 lithium battery has no memory, so unlike nickel battery, hydrogen battery and nickel-chromium battery, it must be discharged every time it is charged. It can be charged and discharged anytime and anywhere. Precautions for the use of 18650 battery: In order to prevent battery leakage, heat generation and explosion, please pay attention to the following precautions: Do not remove the battery under any circumstances. Do not immerse the battery in water or sea water. Do not use or place batteries near heat sources, such as fires or heaters. Do not heat or throw the battery into the fire. It is forbidden to weld the battery directly. Do not charge near a fire or in a hot environment. Do not put the battery in a microwave oven or high-pressure container. Do not use or place the battery under high temperature (such as in strong sunlight or in a very hot car), because this may cause overheating, fire, or loss of function and life. The battery that leaks electrolyte or dissipates the smell of power solution should be kept away from the fire source to prevent fire or explosion. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: What is the difference between nickel-cadmium batteries, nickel-hydrogen batteries and lithium batteries?