What are the capacity testing methods for lead-acid batteries?

Lead-acid battery capacity inspection 1. Visual inspection Use visual inspection to check the appearance of the battery for leakage, deformation, cracks, stains, corrosion, and loose nuts. 2. Capacity test method The main battery of UpS system is mostly lead-acid maintenance-free battery, and the voltage of single battery is 12V. In order to be able to grasp the approximate capacity of the battery pack at any time, it is necessary to conduct a check discharge test. The method is: ( 1) In the UpS power supply system, turn off the rectifier (UpS input) and allow the battery to directly supply power to the load carried by the UpS. The terminal voltage, temperature, specific gravity, room temperature and discharge time of each battery must be measured before and after the battery pack is discharged. Discharge up to 30% to 40% of the rated capacity. (2) After the discharge is over, the battery should be charged, and the charged power should be 1.2 times the discharged power. (3) Make a discharge curve based on the measured data and save it for comparison in the next test. 3. Judgment of backward battery The terminal voltage of the backward battery is low during discharge, so the backward battery should be measured in the discharged state. If the terminal voltage is the lowest in the three continuous discharge cycles, it can be judged as the backward battery in the group. . Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Why does the lead-acid battery leak?