How to judge the quality of the battery?

Visual inspection, some batteries will be bulged and deformed after they are broken, and some even leak, so the quality of the batteries can be judged intuitively. How to judge the service life of the battery Open circuit inspection, after the battery terminal or internal open circuit, there will be a fault that the battery cannot be charged in and out. During charging, the battery segment voltage directly reaches the highest voltage value output by the charger, and the charger is removed and measured Whether there is voltage at both ends of the battery terminal, if there is no voltage, the circuit will be opened and the battery will be damaged. Short-circuit inspection, after the battery terminal or internal short-circuit, there will be serious battery self-discharge and large charging current faults. The capacity drops, the actual discharge capacity of the battery is less than about 60% of the rated capacity, and there is no significant increase after maintenance, and it can be determined to be scrapped. Judgment method of battery service life The battery charges and generates heat. When the positive electrode of the battery softens, causing the active material to fall off, the internal resistance increases, and a large amount of impurities in the electrode plate fall off. The gas evolution rate during charging is added. In addition, the battery heats up when charging, and it also increases the self-discharge of the battery, causing the battery to run out in a short period of time. The battery should be replaced at this time. 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: What types of car batteries?