What are the steps for testing 18650 lithium battery packs?

Steps to detect 18650 lithium battery pack 1. Check the label of your 18650 lithium battery pack to confirm that its voltage output is 3.7V, but the capacity may be greater than or less than 2000mAh (some are 3000mAh). 2. Locate the positive and negative poles of the 18650 lithium battery pack, the battery's circular protruding button shape is the positive pole of the battery, and the flat bottom is the negative terminal. 3. Use a multimeter to check the output voltage. Make sure it is set to measure voltage. Place the small metal rod at the end of the red cable on the positive terminal of the 18650 lithium battery. Place the metal rod at the black end of the multimeter on the negative terminal of the battery. 4. Check the display panel of the multimeter. If the battery is in a normal state, it should display between 3.6 and 3.7V. If the reading is lower than 3.5V, fully charge the battery. If it is still lower than 3.5V after charging, it means you want to replace it, because these all indicate that the battery charge is slowly decreasing. 5. Check the battery capacity, set a multimeter to measure the amount of current passed per hour, and place two metal rods on the positive and negative metal ends of the battery. 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 article: Why does the capacity of the ternary lithium battery decrease?