The maintenance of lead acid batteries is indispensable. Whether it is manual operation or maintenance or automatic monitoring and management, it is to detect the abnormal failure of individual batteries or the equipment system failure that affects the charging and discharging performance of the battery in time, and actively take corrective measures to ensure the power supply The system runs stably and reliably. The inspection and maintenance of batteries are divided into routine maintenance, quarterly maintenance and annual maintenance.

　　1. Routine maintenance

　　1. Ensure that the battery surface is clean and dry;

　　2. Always pay attention to changes in the ambient temperature of the battery system and the appearance of the battery;

　　3. Frequently check the online floating charge voltage of the battery and the floating charge voltage of the battery pack (total terminal voltage), and compare it with the panel display, and correct it if necessary;

　　4. Ensure that the battery cabinet or battery room is clean and well ventilated or illuminated.

　　Second, quarterly maintenance

　　1. Visually inspect the cleanliness of the outer surface of the battery, the integrity of the casing and cover, whether the battery appearance is bulging or deformed, and whether the battery has signs of overheating;

　　2. At the unified inspection point of the battery system every quarter, detect and record the ambient temperature of the battery system and the average temperature that can represent the system. When the temperature is lower than or higher than 25℃, the temperature control system should be adjusted, if no temperature control system is installed , The float voltage should be adjusted;

　　3. Measure and record the total floating charge voltage at the battery end and compare it with the value displayed on the panel meter. If there is a difference, find the cause and correct it in time;

　　4. Measure and record the floating charge voltage of each battery in the system. Under normal circumstances, it should fluctuate within a certain range. If an abnormality is found, find out the cause and correct it;

　　5. To do a restorative discharge test, use a dummy load or actual load to discharge, that is, cut off the power supply and use the battery to supply power. After finding that the capacity of an individual battery is low, charge the battery in a balanced manner. If the capacity cannot be restored after the balanced charge, the battery with too low capacity should be replaced.

　　3. Annual maintenance

　　1. Maintain all content repeatedly quarterly;

　　2. Check the connection points between all batteries and ensure that the connections are tight and reliable;

　　3. Take a few batteries at will for internal resistance test. Due to the wireless relationship between the internal resistance of the battery and its capacity, the internal resistance of the battery cannot be used to directly indicate the accurate capacity of the battery, but the internal resistance of the battery can be used as the battery’s "healthy" state. Bad indicator signal.