What is the use of 18650 lithium battery

1. Regarding the issue of direct charging and cradle charging, I think it is better to use cradle charging if time permits. This can extend the life of the battery and add a single charge capacity. Of course, some can also be used. The external ones should be summer, such as mobile power supplies! 2. If the battery is not used for a long time, it is best to charge about 40% of the power and store it at a temperature of 10~30℃, and recharge it every six months or so; 3. Regarding the new 18650 lithium battery just bought, Some people say that the first three charges must be charged for more than ten hours in order to fully activate the battery. I don't think this is necessary. Of course, the capacity of the new 18650 lithium battery may be reduced in the first few times. That is the long-term storage of the battery. , Caused by the passivation of the surface of the active material, I think it is enough for the first few times to charge the charger to the green light and one or two hours after the green light is on. Of course, the charging time will vary with the charging current of your charger and the capacity of your battery. There are changes. In short, it is not that the longer the charging time, the better. This will not only fail to activate the battery, but on the contrary will affect the life, if it is serious (if your charger voltage accuracy control is not enough), it will explode. 4. In the long-term use of 18650 lithium batteries, everyone often has a misunderstanding. I need to tell you that everyone often thinks that the number of times the battery is used is a certain amount, such as 500 times, so it must be used every time. Sufficient use, so it is required that every charge must be as overflowing as possible, and every discharge must be as clean as possible, as if this use is the most effective use, in fact, the battery life depends on your use. Certainly, if the cycle life of your battery is 500 times, if you use it properly, then maybe it can be used 700~800 times, so the correct way to use it is not to charge too much, about 90% is enough. During use, if the battery is low, it can be charged immediately, instead of waiting for it to automatically shut down or even after it shuts down automatically. We have done such an experiment in the laboratory: the battery life of 80% DOD is longer than The service life of a 100% DOD battery is about 30% longer; 5. Another point is also very important. The 18650 lithium battery has strict requirements on the charger, and the charging voltage is very strict. You have to see that its requirement is 4.1V. It is still 4.2V, because if the negative electrode is graphite series, the limit voltage is 4.2V. If the negative electrode is coke series, the limit voltage is 4.1V. This will be explained on the general battery. In short, the charger and battery must be Match, you can’t use a 4.2V charger to charge a 4.1V battery; 6. One more point must be emphasized: absolutely can’t use a Ni-MH battery or Ni-Cr battery charger to charge a 18650 lithium battery, which will not only damage the battery And it may explode; the 7.18650 lithium battery has no memory function, so every time it is charged, unlike the nickel-hydrogen battery and the nickel-chromium battery, it needs to be discharged. It can be charged and discharged anytime and anywhere. 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 post: What are the key materials for power lithium batteries