What are the important technical parameters of UPS batteries?

What are the important technical parameters of UPS batteries? 1. Battery capacity UPS battery capacity is determined by the amount of active material in the battery, usually expressed in Ah or mAh. For example, the nominal capacity of 250Ah (10hr, 1.80V/cell, 25°C) refers to the discharge capacity at 25°C with a current of 25A for 10 hours to reduce the voltage of a single battery to 1.80V. 2. The potential difference between the positive and negative electrodes of the rated voltage battery is called the rated voltage of the UPS battery. Common lead-acid batteries have three rated voltages of 2V, 6V, and 12V. The single lead-acid battery is 2V, and the 12V battery is made up of 6 single batteries in series. The actual voltage of the battery is not a constant value. The voltage is high when there is no load, and the voltage will decrease when there is a load. When there is a sudden large current discharge, the voltage will suddenly drop. There is an approximately linear relationship between the battery voltage and the remaining power. This simple association exists only when there is no load. When a load is applied, the battery voltage will be distorted due to the voltage drop caused by the battery's internal impedance. 3. The maximum charge and discharge current of the battery is two-way, there are two states, charging and discharging, this current is limited, different batteries, the maximum charge and discharge current is different. The charging and discharging current of the battery has a great relationship with the system. If the design is not good, it will affect the performance of the system. The charging current is related to the power of the component. For example, a system, the component is 5kW, and the UPS battery pack voltage is 48V, then the maximum charging current of the battery About 100A. If it is an ordinary lead-acid battery with a maximum current of 0.1C, the battery capacity is at least 1000AH; if it is a lead-carbon battery with a maximum current of 0.25C, the battery capacity is at least 400AH. 4. Depth of discharge and cycle life. During the use of UPS batteries, the percentage of the battery's rated capacity is called the depth of discharge. The depth of discharge has a deep relationship with battery life. The deeper the depth of discharge, the shorter the charging life. The UPS battery undergoes a charge and discharge, which is called a cycle (a cycle). Under certain discharge conditions, the number of cycles that the battery can withstand before the battery reaches a certain capacity is called the cycle life. The cycle times of various batteries are different, the traditional fixed lead-acid battery is about 500~600 times; the starting lead-acid battery is about 300~500 times; the valve-regulated sealed lead-acid battery has a cycle life of 1000~1200 times. 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 article: What are the reasons for the flatulence of soft-pack lithium batteries?