Why UPS power battery has a short service life

Why UPS power battery has a short service life 1. The ambient temperature is too high, which will cause the UPS power battery to overcharge and produce gas, and the ambient temperature is too low, which will cause the battery to be undercharged, which will affect the battery's service life. Therefore, the ambient temperature is generally required to be around 25°C, and the UPS float voltage value is also set according to this temperature. In practical applications, the battery is generally charged in the range of 5°C to 35°C. Lower than 5°C or higher than 35°C will greatly reduce the capacity of the battery and shorten the service life of the battery. 2. Depth of discharge The deeper the depth of discharge of the battery, the fewer the number of cycles it uses, so it is necessary to prevent deep discharge during use. Although UPS has a battery low-potential protection function, generally when a single battery is discharged to about 10.5V, the UPS power supply will automatically shut down. However, if the UPS power battery is under light-load discharge or no-load discharge, it will also cause deep discharge of the battery. The so-called depth of discharge refers to the percentage of the battery's standard capacity when the user is using the battery. 3. After storage, transportation and installation, before putting into use after installation, the remaining capacity of the battery should be judged according to the open circuit voltage of the battery, and then different methods should be used to charge the battery. For spare storage batteries, supplementary charging shall be carried out every 3 months. You can judge the quality of the battery by measuring the open circuit voltage of the battery. Take a 12V battery as an example. If the open circuit voltage is higher than 12.5V, it means that the battery has more than 80% energy storage. If the open circuit voltage is lower than 12.5V, it should be recharged immediately. If the open circuit voltage is lower than 12V, it means that the battery stores less than 20% of the electric energy and the battery is unusable. 4. The charging and discharging current of the battery is generally expressed by C. The actual value of C is related to the battery capacity. For example, for a 100AH u200bu200bbattery, Cu003d100A. The optimal charging current for lead-acid maintenance-free batteries is about 0.1C, and the charging current cannot be greater than 0.3C. Excessive or too small charging current will affect the battery life. The discharge current is generally required to be between 0.05C and 3C. The UPS can meet this requirement in normal use, but it is also necessary to prevent accidents such as battery short-circuits. 5. Charging voltage Since the UPS power supply battery is a standby mode, the mains is in a charging state under normal conditions, and it will only be discharged when the power fails. In order to prolong the service life of the battery, UPS chargers are generally controlled by constant voltage and current limiting. After the battery is fully charged, it will turn to the floating state, and the floating charge voltage of each cell is set to about 13.6V. If the charging voltage is too high, the battery will be overcharged, otherwise the battery will be undercharged. 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 replace the battery pack