The use of 18650 lithium battery and three ways to judge the positive and negative electrodes

The use of lithium secondary batteries in the energy battery industry benefits from their superior performance. With the continuous development of lithium secondary battery technology, it has been widely used in our daily lives; rechargeable batteries that have been used repeatedly are more and more popular with consumers. Pay attention to the energy battery industry and fully understand the battery so that we can use it for my own use. At present, 18650 lithium batteries are used in the following areas. 1. Energy storage is mainly used in base station power supply, clean energy storage, grid power storage, home optical storage system, etc. 2. The power category mainly refers to electric vehicles, electric bicycles, new energy vehicles, etc. 3. Digital mobile phones, tablets, notebook computers, electric toys, MP3/MP4, earphones, power banks, model airplanes, mobile power supplies, etc. There are three ways to judge the positive and negative electrodes of 18650 lithium battery. Method 1: The convex head of the 18650 lithium battery is the positive electrode, and the flat bottom is the negative electrode. Method two: multimeter measurement, red and black test leads, when displaying a positive number, the red line is +, black is -, when displaying a negative number, the red test pen corresponds to the-electrode, and the black corresponds to the + electrode; Method three: look at the silk screen, The silk screen is positive and the silk screen is generally left positive and right negative. Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: Advantages of lithium iron phosphate batteries and material decomposition