How to distinguish the true and false of 18650 lithium battery and 18650 lithium battery?

Visually inspect the appearance of the 18650 battery, the A product 18650 e-cigarette battery has an exquisite appearance, the battery pack film is smooth and wrinkle-free, and has a strict battery chasing logo. You can see the specific battery data in the inkjet logo on the battery film. Measure the weight of the 18650 lithium battery, the weight of the A product lithium battery is obviously heavier than the inferior product 18650 lithium battery pack, and when you hold the 18650 fake battery, it clearly feels that the battery is a shell. To detect the weight of genuine and fake batteries, put the 18650 lithium battery pack on an electronic scale for weighing, and then compare the weight; the weight of the A product 18650 battery, that is, the real 18650 battery is generally about 43g, and the weight of the fake 18650 battery is generally the lowest 10g, there are also 18650 fake batteries mixed with mud. The weight of the mud 18650 battery is generally 30g. How to identify the quality of 18650 lithium batteries? 1. Use a multimeter to detect the gear whose DC gear is greater than the rated voltage of the battery. For example: detect dry battery 9V, 1.5V with DC10V, DC2V file detection. 2. After selecting the gear according to the rated voltage of the lithium battery, connect the positive and negative poles of the battery with the test leads. When the detection voltage is greater than or equal to the rated voltage marked on the battery. The battery is good. When the detection voltage is lower than 10% of the rated voltage, the battery can be used on electrical appliances with a small discharge depth. For example: quartz clock, remote control and other electrical appliances. When the detection voltage is less than 20% of the rated value, the battery has no use value. 3. It should be reminded that the voltage of rechargeable batteries is generally 15%-25% lower than that of similar batteries. Example 5# battery voltage is 1.5V, while rechargeable batteries generally only have 1.2-1.3V. Therefore, you should carefully confirm the rated value of the battery. 18650 lithium battery life theory is 1000 cycles of charging. Due to the large capacity of the unit density, most of them are used in notebook computer batteries. In addition, because the 18650 has a very good stability at work, it is widely used in various electronic fields: often used in high-end strong light flashlights and portable Power supply, wireless data transmitter, electric heating warm clothes, shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.