Analysis of UPS battery maintenance methods

1. Maintain a proper ambient temperature Generally speaking, the major factor affecting UPS battery life is ambient temperature. Generally, the better ambient temperature required by battery manufacturers is between 20-25°C. Although the batteries currently used in UPS power supplies are generally maintenance-free sealed lead-acid batteries, the design life is generally 5 years, which can only be achieved under the environment required by battery processing manufacturers. If the specified environmental requirements are not met, the length of their lifespan will vary greatly. In addition, the increase in ambient temperature will accelerate the shortening of UPS battery life. 2. Periodic charging and discharging The float voltage and discharge voltage in the UPS power supply have been adjusted to the rated value at the factory, and the size of the discharge current is increased with the increase of the load. The load should be adjusted reasonably during use. Such as controlling the number of electronic devices such as microcomputers. Under normal circumstances, the load should not exceed 60% of the UPS rated load. Within this range, the discharge current of the UPS battery will not be over-discharged. Because UPS is connected to the mains for a long time, in an environment with high power supply quality and few mains blackouts, the battery will be in a floating state for a long time, which will cause the battery's chemical energy and electric energy to convert between the activity and accelerate the aging. And shorten the service life. Therefore, it should be completely discharged every 2-3 months, and the discharge time can be determined according to the capacity of the battery and the size of the load. After a full-load discharge is completed, charge it for more than 8 hours according to regulations. 3. Replace waste/bad batteries in time. The number of batteries currently equipped with large and medium-sized UPS power supplies ranges from 3 to 96, or even more. These individual batteries are connected by circuits to form a battery pack to meet the requirements of UPS DC power supply. In the continuous operation and use of UPS, due to differences in performance and quality, it is inevitable that individual batteries will be damaged due to performance degradation and insufficient power storage capacity. When one of the batteries in the battery pack is damaged, the maintenance personnel should inspect and detect each battery to eliminate the damaged battery. When replacing new batteries, you should try to buy batteries of the same manufacturer and the same model, and it is forbidden to mix acid-proof batteries, sealed batteries, and UPS batteries of different specifications. 4. Use peak power supply to charge the battery. Use peak power supply to charge the battery. For users who have long-term low-voltage power supply or frequent power outages of UPS batteries, in order to guard against premature failure of UPS batteries due to long-term insufficient charging, ensure that the battery is discharged every time There is enough charging time afterwards. Generally, after a battery is deeply discharged, it takes at least 10 to 12 hours to recharge to 90% of the rated capacity. 5. UPS power supply should not work at full load. When using UPS batteries, you should pay attention to the various parameters of UPS. All UPS power supplies should not work at full load. More than 20% power margin should be reserved. Good load control is 40% of UPS rated output power~ Between 60%. 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: Why do lithium batteries need a BMS management system?