EV battery

How to measure 18650 lithium ion battery capacity

by：Vglory 2021-03-26

The rated voltage is generally 3.7V. There is a professional battery capacity cabinet. It is generally set to 3.6V or 4.2V to reach the rated voltage. The capacity recorded in the second step is the battery capacity. The arbitration method is 0.2 times, such as 1000mAh capacity. 18650 sub-capacity cabinet Method three: use a battery capacity tester, usually 4.2V or 3.6V, the second step: discharge the battery, calculate the time and time * constant current u003d battery capacity. Lithium iron phosphate is 3.2V, you can find an adjustable load resistance and a current adjustable DC power supply to calculate the battery capacity through the charging and discharging time, and then discharge at a constant current of 200mA to 2.75V. The third step: charge the battery to a normal level. First charge to 4.20V, charge current charge time u003d battery capacity (charge from 2.7V or 3.0V to 4.2V or 3.6V) or discharge current discharge time u003d battery capacity (discharge from 4.2V or 3.6V to 2.7V or 3.0V ) 18650 lithium ion battery method two: Step 1: Fully charge the battery, and then put it aside for 1 hour constant current discharge. To reach the full voltage, if there is no professional battery capacity cabinet. 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: The difference between power lithium-ion battery and capacity lithium-ion battery

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