What causes the short service life of UPS battery

If the ambient temperature is too high, the UPS power battery will be overcharged and gas will appear. If the ambient temperature is too low, the battery will be undercharged, which will affect the service life of the battery. 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 actual use, the battery is generally charged within the range of 5℃～35℃, lower than 5℃ or higher than 35℃ 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 beware of deep discharge when using it. 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 discharged under light load 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. The storage battery that has been left on standby shall be recharged 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 best 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 beware of unexpected situations, such as battery short-circuits. 5. Charging voltage Since the UPS power supply battery is a standby mode of operation, the mains is in a charging state under normal conditions and 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 overflows, it will be turned into a floating charge 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 post: Detailed explanation of the development status of high-end lithium battery diaphragm technology and the use of diaphragm