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What are the factors that affect the service life of UPS maintenance-free batteries?

by:Vglory      2021-04-27
Factors that affect the service life of UPS maintenance-free batteries The factors that affect the service life of UPS maintenance-free batteries are as follows: installation, temperature, charging and discharging current, charging voltage, depth of discharge, and long-term charging. 1. Overcharge: In the initial stage of charging of ordinary lead-acid batteries, the battery terminal voltage is relatively low. At this time, hydrogen-free oxygen gas is precipitated, and then the lead-acid battery terminal voltage gradually rises. When the battery terminal voltage rises to a certain value, the battery will precipitate A lot of gas. When the battery terminal voltage rises to 2.302.35V/pc (this voltage is called the gas point voltage), the gas in the battery increases significantly. As the charging progresses, the PbO2 on the electrode surface becomes more and more, and the PbSO4 has gradually decreased, the oxygen evolution rate of the positive electrode will become larger and larger, and at the same time, the negative electrode of the battery also begins to evolve hydrogen. Therefore, overcharging will cause a large amount of gas in the battery, which will cause the UPS battery to lose water and cause premature effectiveness and early capacity decline. 2. Overdischarge: The discharge performed to periodically detect the charge capacity of the UPS battery during the operation period is called check discharge. VRLA battery discharges with a constant current of 0.1C and the final voltage is 1.80v. The continuous discharge at the end of discharge is called overdischarge. Once it enters the overdischarge state, the battery terminal voltage will drop rapidly, which can easily cause power supply interruption and transition of active materials. Consumption results in the reduction of active material pores and the reaction area reserved for the next charge, which causes difficulties in subsequent charging and use and maintenance of the battery, and ultimately results in the battery cannot be fully charged and the capacity is greatly reduced. 3. Temperature: The operating conditions of the UPS battery also have an important impact on the battery life. If used for a long time at high temperature, the battery life will be reduced by half for every 10 degrees increase in temperature. How to maintain and extend UPS battery life? 1. Try not to connect inductive loads. Because the starting current of the inductive load will often exceed 3 to 4 times the rated current, this will cause instantaneous overload of the UPS and affect the life of the UPS. 2. It is not suitable for full load or excessive light load. Do not use it according to the rated power of the UPS, and do not think that the empty interface should not be idle and connected to other electrical appliances. The long-term full load state will directly affect the life of the UPS. 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: How to maintain and maintain maintenance-free batteries?
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