What are the charging rules for 18650 lithium batteries?

18650 lithium battery charging rules Many people are surprised at the 18650 lithium battery, why they named it with this number in the first place. 18650 is a cylindrical battery, representing the diameter and height. Now it is mostly used to weigh a single mobile lighting lithium battery. The nominal voltage of the 18650 lithium battery is also 3.7V, and the maximum limit is 4.2V. It is usually used for strong light flashlights, headlights, etc. It can also be combined into medical and electric tools. Generally, if the battery is not required, the board is taken. This article is to prevent the battery from being outdated or using too clean. However, 18650 is mainly used for laptop batteries, and some strong flashlights are also used. Of course, its performance is very good, so as long as the capacity and voltage are appropriate, it is much better than batteries of other materials. Flashlight, MP3, walkie-talkie, cell phone. As long as the voltage is between 3.5-5V, electrical appliances can be used. The 18650 lithium battery charge control is divided into two stages. The first stage is constant current charging. When the battery voltage is lower than 4.2v, the charger charges with constant current. The second stage is the constant voltage charging stage. When the battery voltage is 4.2V, due to the characteristics of lithium batteries, if the voltage is high, it will be damaged. The charger voltage will be fixed at 4.2V, and the charging current will gradually decrease. To a certain value (usually set the current 1/10), cut off the charging circuit, a complete charging instruction, charging is completed. Regarding the charger of the 18650 lithium battery, it needs high control accuracy, because if the accuracy is not good enough, the battery is prone to abnormalities, and the worst thing is that the battery is scrapped. 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 are the ways to improve the performance of lithium iron phosphate batteries?