How to repair the maintenance-free UPS battery?

How to repair the maintenance-free UPS battery? 1. Before cleaning the maintenance-free UPS battery, you must first clean up the dust on the surface of the repaired battery, and remove the dirt and rust on the terminals. 2. Open the exhaust valve and observe the electrolyte inside the battery. Open the glued or heat-sealed battery cover to expose the rubber exhaust valve of the maintenance-free battery. Carefully remove the exhaust valve and save it. Observe the UPS battery Internal situation. Add 0.1% to 0.5% electrolyte to the battery, and there is just flowing electrolyte on the battery. At the same time, check whether there are black impurities. If there are obvious black turbid impurities, the positive plate of the battery has been obviously softened, and the possibility of repairing the battery is relatively small. If there are no black turbid impurities, wait 4 hours for the water to fully penetrate into the battery. If the battery capacity is reduced only because of the long period of inactivity, do not perform this step, and go directly to pre-charging. 3. Pre-charging performs constant-voltage and current-limiting charging for UPS power batteries. That is, at the beginning, charge with a current of 0.1C～0.25C. After reaching 16.2V, the charging voltage is maintained by reducing the current until the charging current drops to 0.03C. Stop charging. Note that when charging, there will be gas and electrolyte overflow from the vent. In order not to pollute the environment, the battery should be placed in a special container. 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 are the uses of UPS power?