How to judge the quality of UPS battery?

Three methods can basically judge the quality of UPS battery. 1. Simulated discharge method. According to the battery capacity, such as 60ah, according to the safety discharge standard, 0.1C, that is, one-tenth of the capacity current, 6 ampere discharge. Be a high-power resistor with a resistance value of 12(V)u0026pide;6(A)u003d2(). Use a multimeter to measure a section of 20 ohms on the electric stove wire of more than 1,000 watts, and then measure one-tenth with a ruler, make a mark, and reliably connect the two battery cables at the two outer ends of the mark. The multimeter is placed on the DC voltage meter pen and connected to both ends of the resistor. Temporarily contact the battery cable connected with the red test lead to the positive terminal of the battery and the other to the negative terminal for 10 seconds. If the voltage remains above 10.8 volts, the battery is basically good. 2. Online charging measurement method. When UPS is charging the battery online, measure each battery. If there is a problem with high voltage, remove the key measurement. 3. Online discharge measurement method. The UPS loads the load online, cuts off the external AC power supply, and uses the battery to supply power. If there is a problem with low voltage, remove it to focus on measurement. Under simple conditions, you can make a rough measurement. Use a multimeter to measure the no-load voltage of the UPS battery, connect a small resistance and high-power load, and let the battery discharge with high current instantaneously. Use a multimeter to measure the voltage at this time, and judge the battery status based on the voltage drop. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How long is the life of the 18650 lithium battery pack?